Wednesday, February 29, 2012

Fruit Leather

Fruit Leathers are a traditional method of preserving a fruit harvest.

I recently got a great, brief question from a reader, Kyan:
"Would you be willing to do a post on fruit leather? I've never heard of it before."


If you've ever eaten a "Fruit Roll-Up", as many kids in the U.S. have, then you are familiar with the idea of a Fruit Leather... even if you've never heard the name.  Although making your own is significantly healthier than the store bought, mass-produced variety; plus it's a lot of fun, and kids (and grown-up kids) love them!

If you look online there are literally hundreds of recipes for making Fruit Leather, but they all involve the same process...

Thicker Fruit Leathers take longer to dehydrate.

Instructions for Making Fruit Leather

  1. Obtain the freshest, ripest fruit possible.
  2. Clean the fruit if needed.
  3. Cut up the fruit if needed. Discard bruised or damaged areas.
  4. Optional Step - Add a color stabilizer. The most natural is lemon or lime juice, but some people make a liquid dip from a mixture of water and ascorbic acid crystals (easily purchased at large grocery stores). Fruit chunks are allowed to soak for about 5 minutes. This step is used for apples, apricots, pears, and peaches.
  5. Puree the fruit in a blender - may need to add a small amount of water so the fruit blends well and the puree pours well. The texture should be close to applesauce. 
  6. Optional Step - Strain the puree. This gives a smoother texture, but also removes some of the fiber and nutrients from the puree.
  7. Optional Step - Add a sweetener. I think honey is the healthiest, plus it gives a good texture. Plain table sugar can be used, but it can give the Fruit Leather a granular (almost crunchy) texture. Concentrated fruit juice can also be used - this can be store bought or homemade by heating fresh fruit juice over low heat for a long time until a large portion of the water evaporates, and you are left with a very sweet, thick sauce.
  8. Pour the puree onto a flat surface for drying. This is where things can vary tremendously.  See Drying Methods below. The thickness of the poured puree should be about 1/4 inch (0.6 cm) thick. Try to keep the puree about an inch (2.5 cm) from the edge as it will spread as it dries.
  9. Remove the dried Fruit Leather, cut to size if needed, roll up or store flat in a clean, dry location (a paper bag works well, but fruit leathers can be frozen.
  10. Fruit Leathers will store for three weeks at room temperature, three months in a refrigerator, or up to a year if frozen.

Dehydrators or Ovens can be used to dry the fruit puree.

Drying Methods for Fruit Leather

  • NOTE - drying times can vary significantly on the method used, the consistency of the puree and the types of fruits used. It is recommended that you begin checking your Fruit Leather after the first 2-3 hours of drying. 
  • Dehydrator - this is the easiest method. The puree is poured onto plastic sheets provided with the dehydrator. If your dehydrator does not have the plastic sheets, then a layer of plastic wrap will work fine. 
  • Oven - this method works just as well, but may take a little experimentation to get it just right. Place plastic wrap on a cookie sheet. Pour the puree on the plastic wrap covering the cookie sheet. If you wet the cookie sheet a little, the plastic will stay in place on the cookie sheet better. Place the oven on its lowest setting, and crack the oven door open - this is very important as it lets the moist air escape. Ideal temperature is 100 F (37 C). Most ovens cannot be set that low, so just set the oven to the lowest setting, and watch the drying fruit - higher temps will dry faster. 
                    - At 100 F (37 C) it will take about 12-16 hours.
                    - At 150 F (65 C) it will take about 8-10 hours.


A beautiful raspberry Fruit Leather

This is the very basic method for making Fruit Leathers. As I said, there are many, many recipes online that include spices (cinnamon, cloves, nutmeg, allspice, ginger, vanilla, etc.), chopped fruit with the puree (raisins, dates, dried apricots, dried coconut, etc.), or other random ingredients (peanut butter, chopped nuts, pumpkin, yogurt, etc.), and even brandy or liqueur (uh... not for most kids) can be added to the puree. The variations are almost endless, and the results are delicious!


Tuesday, February 28, 2012

Permaculture Tip: Nature Tending

A perfectly ripe wild blackberry is a thing of perfection!


A Permaculture Tip is an idea that is derived from observing and interacting with nature.  It is simple.  It is safe.  It is effective.  It helps build a sustainable system of agriculture and life in general.  If you have any Permaculture Tips you would like to share, please let me know.  I will post it here, give you the credit, and post a link to your blog or website if you have one.  Email me here: kitsteiner@hotmail.com

Nature Tending is a term I coined to describe subtle gardening of the natural world. In Permaculture, we have the design concept of Zones (read more about Zones in this article). Zone 4 is a semi-wild area. It is a place that is only visited a few times each year and is almost entirely left to nature... but not entirely. It is often used for grazing of animals, for collecting firewood, for coppicing, for hunting, and for wild harvesting. This is where Nature Tending works the best.

Have you ever seen a wild tangle of blackberries or a few black cherry seedlings trying to survive in the forest edge? What if we trimmed back some old blackberry canes to allow the new shoots room to grow? The blackberries produced on those developing canes would likely be larger and easier to harvest. What if we cut back some branches from that neighboring walnut shading those black cherry seedlings? What if we piled a little dirt just downhill of those seedlings so that when it rained a little extra water would linger at its roots? What if we took some of the leaf litter and tucked it up under the seedlings to provide a little extra natural mulch? These quick actions would provide a better life for these seedlings, and a better life often means survival. In a few to a dozen years, those seedlings are now large trees providing habitat and food for wild animals and wood and food for us.

These small things, that take only a few seconds each, can pay big dividends in the months and years to come.

I think back to the time when I live in Franklin, Kentucky. My home's backyard was a strip of woodland before the farmer's field of corn and soy. It was chock full of black cherry trees (that made some great jelly, by the way!) and black walnut trees. There were just a few straggly blackberry vines snaking their way through the edge of the field and the woodland. I remember thinking that I wish these blackberry canes were more vigorous and produced more fruit. This would have been the perfect time and place for Nature Tending. If only...

Maybe we won't be the ones who benefit from this. Maybe it is just the wildlife that benefits. Good for them. Maybe we set it up so another person enjoys the benefits of our (very brief) labor, and maybe they become so enamored with the idea of harvesting from the wild that they do the same for others. Maybe it is just a little kid who picks the blackberries while on an "adventure" in the woods, dreaming he is an explorer and living off the land. Maybe he grows up to be the next Bill Mollison or Geoff Lawton or Joel Salatin or Michael Pollan or...

Once your eyes have been opened to the idea, you can see the opportunities for Nature Tending all around.


Monday, February 27, 2012

Permaculture Plants: Goumi


Goumi is a fruit well known in Asia and gaining popularity in the U.S.

Common Name: Goumi, Gumi
Scientific Name: Elaeagnus multiflora
Family: Elaeagnaceae (the Oleaster Family)

A perfectly ripe Goumi berry with its edible, but not typically eaten, single seed.

Description:
A small to medium, multi-stemmed shrub native to eastern Asia that produces sweet-tart, red, cherry-sized fruits, can grow in a very wide range of soil conditions, tolerates some shade, and puts nitrogen back into the soil. This plant has a lot going for it.

Elaeagnus multiflora by M.E. Eaton

History:
Goumi has long been grown in China, Korea, and Japan as a food and medicinal plant. It has only been recently that it has has become available in Europe and North America.

Trivia:

  • Goumi fruit have a single seed which is edible but not tasty... it's fibrous
  • Because it adds nitrogen to the soil, Goumi has been grown in orchards where it has been reported to increase orchard production by 10%

Goumi fruits well in less than ideal conditions.

USING THIS PLANT
Primary Uses:

  • Fresh eating - use only very fresh fruit
  • Cooked (pies, tarts, etc.) - cooking, with the addition of sugar, makes good use of underripe fruits
  • Preserves, jams, jellies, etc. 
  • Fruit leather


Secondary Uses:

  • General insect (especially bees) nectar plant
  • Food source for wildlife... fruit may stay on the plant through the winter if not harvested.
  • Nitrogen fixing (i.e. it puts nitrogen back into the soil)
  • Hedges - leaves seem to shimmer in the breeze
  • Tolerates salt water, so can be used in maritime environments
  • Flowers are strongly scented... reminiscent of lilac
  • Used medicinally for hundreds (or more) years, but no reliable information


Yield: No reliable information available
Harvesting: Summer. Late July to August. Ripe when red, but astringent (dry and lip-puckering) before ripe.
Storage: Use quickly as they do not store well.

Goumi hedge in flower.

Goumi flowers being visited by an Orchard Mason Bee (slightly smaller than a honey bee).


DESIGNING WITH THIS PLANT
USDA Hardiness Zone: 4-9, not frost tender
AHS Heat Zone: 8-2
Chill Requirement: 50-450 hours/units depending on the species and variety

Plant Type: Small to Medium-sized Shrub
Leaf Type: Deciduous or Semi-Evergreen (depending on the USDA Zone it is planted)
Forest Garden Use: Shrub Layer
Cultivars/Varieties: Multiple varieties, but many are not available in the U.S.

Pollination: Typically Self-Sterile; should be planted with two selections for cross-pollination and best crop yields
Flowering: Spring (April-June)

Years to Begin Bearing: 3-4 years, Years to Maximum Bearing: 5-10 years

Goumi berries should only be eaten fresh when perfectly ripe.

PHYSICAL CHARACTERISTICS OF THIS PLANT
Size: 6.5-10 feet (2-3 meters) tall and wide
Roots: Shallow and flat, will sucker... new shoots will from from base of the plant
Growth Rate: Medium to Fast

Goumi is a shrub that thrives on neglect.

GROWING CONDITIONS FOR THIS PLANT
Light: Prefers full sun
Shade: Tolerates moderate shade
Moisture: Medium, however will tolerate dry soils
pH: tolerates a wide range of soil conditions (5.1 - 8.5)

Special Considerations for Growing: 
Goumi is an actinorhizal nitrogen fixing plant... it will grow best if inoculated with actinobacteria from the genus Frankia.

Propagation:  By seed - will require 8-12 weeks of cold stratification for germination. Can propagate through cuttings, but this is less reliable.

Maintenance:
Minimal.

Concerns:
Spreads easily by seed. It is considered an established exotic species in parts of the eastern U.S.


Friday, February 24, 2012

Solar Water Heaters

Classic image of rooftops in Turkey... solar water heaters and satellite dishes.

In my travels overseas, I occasionally come across things that make me say, "Why in the world do we not do this in the United States?"  Solar Water Heaters are one of them.  Yes, there are some people (mostly corporations) who are utilizing solar water heaters in the U.S., but it is nothing like the common everyday use like in Turkey, South Africa, Germany, and India.

I think the biggest reason why the U.S. is not utilizing this technology more is because of the photo at the top of this article. Home owners associations do not want their roofs to look cluttered like this... it's unattractive. Who cares about the monetary savings and reduction in pollution to generate the energy to heat the water conventionally? But in reality, they do not have to look bad. German rooftops seem to integrate the solar systems into the design a lot more.

Solar water heating systems in Germany are a bit more aesthetically pleasing.

According to 2010 data, it would take over 12 years to have the initial system's cost paid back in energy savings in the United States. In Brazil and South Africa, the payback time is 5 years or less. However, this is for a purchased system. There are many systems that can be designed, built, and installed for only a few hundred dollars (if that) if we are willing to do a little scrounging and do-it-yourself work. I'll try to highlight some of these systems in future posts.

Passive (A) and Active (B) Solar Water Heating Systems.

There are two basic design types of solar water heating systems, passive and active. Passive Systems (aka Thermosiphon Systems) allow the natural properties of water (hot rises and cold sinks) to run the system. This is not as efficient a system, but it is cheaper and is often more reliable as it contains no moving parts and has no electronics that could break. Active Systems (aka Forced-Circulation Systems) utilize an electric pump and an electric controller to maximize the sun's heating power, and well designed systems also use solar energy to power the electric pump and controller.

Another way to categorize solar water heating systems is Direct Circulation vs. Indirect Circulation systems. Simply put, direct circulation systems heat up your home's water directly. Indirect circulation systems will heat up some sort of anti-freeze fluid that then runs through coils of pipe (a heat exchanger) that heats up your home's water indirectly. I always think of an indirect system like an electric blanket... the wires heat up the blanket which heat me up. Indirect circulation systems are good for areas that freeze frequently or severely; the anti-freeze fluid won't freeze and crack the pipes which could happen with a direct circulation system in colder climates.

A Direct Circulation Solar Water Heating System (this one is a passive design type).

An Indirect Circulation Solar Water Heating System (this one is an active design type).

Finally, there is a choice of solar collector types. The solar collector is the heart of the system, it is how solar energy is actually captured. There are three basic solar collector design types:

  • Batch or Integral Collector-Storage (ICS) - These systems utilize one or more tanks, painted black or coated with a "selective absorber" finish, which is inside an insulated box with a clear top often made of glass. This design uses the same concept as solar ovens. Cold water flows into the black tank which is "cooked" by the sun to fairly high temperatures. The water is heated and returns either actively or passively back to the home. These systems are probably the most common do-it-yourself types of systems. Old refrigerators with the door removed and glass placed on top are frequently used.
  • Flat-Plate Collector - This is a very similar design to the Batch or ICS system. However, instead of large tanks inside the sealed box, there is a tube that slowly winds its way back and forth through the flattened box.
  • Evacuated-Tube Collector - This collector design relies on the fact that heat cannot be lost easily through a vacuum. This is basically a tube within a tube. The space between the inner and outer tubes is "evacuated" of all air (made into a vacuum). The outer tube is clear, typically glass, and the inner tube is painted black. The sunlight passes through glass tube and heats up the black tube, but the heat cannot escape back out through the vacuum. These systems are almost always an indirect circulation design where an anti-freeze liquid is circulated through the inner black tube. The heated anti-freeze then flows back to a heat exchanger and heats up the home's water. Evacuated-Tube Collectors are very efficient, but much more expensive.

The last thing to consider with solar water heaters is how they will be integrated into the home. Some people choose to utilize the solar water heating system as the home's primary water heating system. If the sun is out, they you have hot water. If the sun does not come out, then within hours to days, depending on the size of your storage system and its ability to retain heat, you will be out of heat. Homes that are completely "off-grid" often do not have, or do not want to use, extra electricity or gas to heat water on cloudy days.

Another way to integrate solar water heating systems, and one that is most often used, is to have the solar water heating system pre-heat water going to a conventional water heater (either electric or gas). Newer constructs are using on-demand water heaters that have no hot water storage tank. The pre-heated water then needs significantly less energy (sometimes none) to heat it up for the home's needs. This allows a home greatly reduced energy costs, but still provides hot water on cloudy days.

Solar water heating systems will become more and more popular in the U.S. as people start to understand their benefits and start to feel the pain of increased energy costs.



Wednesday, February 22, 2012

Introducing AgriTrue!


I am very excited to tell you about a project I have been working on for some time... for almost a year now. We are finally about ready for our website to go live. 

I would like to introduce you to AgriTrue.

I am the project manager for AgriTrue, and I have spent many hours working behind the scenes to make this idea a reality.

As a Family Medicine physician, I have seen how the food we consume can make us unhealthy. I have seen how the food we eat can literally kill us. Half of the battle for our health is deciding to make good choices in the food we eat. But once we have made that decision, we have to act on it.

But how can we make good food choices when we don’t even know what we are eating anymore? Where did that vegetable come from? Is it even from this continent? How long ago was it picked? What vitamins and phytonutrients have been lost in the transoceanic voyage it made? What chemical was sprayed on it, and is it still there in the plant’s cells ready to be consumed by us? It gets even more complicated when it comes to meat and dairy.

These questions cannot be answered by going to the local grocery store’s produce aisle.

Connecting the people who produce food with those who eat it. It’s a simple concept, but it is a concept that has been lacking for too long in the U.S. There are a growing number of farmer’s markets and there are more and more CSA’s (Community Supported Agriculture) and cooperatives being created across the country every week. But what do you know about those vendors? How can you find out about the things that are important to you about your food?

You can go out and visit the farms. Talk to the people who produce your food. I highly recommend this, but it is very, very time consuming. Few of us will actually do this. So what are we left to do?
This is what AgriTrue is all about, and this is why I am so excited about it. AgriTrue is about information, and it is about relationships.

AgriTrue will provide a place where we can find out where our food comes from, who produced it, how they produced it, and why they produced it. AgriTrue will help us make informed decisions about our food.

I can hardly wait!

Our site will be going live in 30-60 days.  I'll keep you posted.  Stay tuned.


Tuesday, February 21, 2012

Organic Fertilizers: Wood Ashes


Wood ash is a great source of Potassium.


What is it?
Wood ashes are the remains of fire consumed wood.  This is a fairly simple definition, but that's what it is. When people understood the benefits of wood ash in the 18th century, the British colonies of America were exporting large amounts of this material back to Great Britain.

What is the primary benefit?
Wood ash is a good source of Potash (aka potassium... in a water soluble form). It is also a good source of other trace minerals. When wood burns, the nitrogen and sulfur are lost as gases. What remains is potassium (potash) plus calcium, magnesium, iron, phosphorus, manganese, and sodium. There are also other minerals present to a lesser degree including aluminum, arsenic, boron, cadmium, chromium, copper, lead, mercury, molybdenum, nickel, selenium, and zinc. Some of these minerals, like arsenic and nickel, where thought to be poisons to biological life. However, we know now that most of these minerals actually have a vital, albeit very small, role in the biology of microorganisms and plants. Returning these minerals and trace elements to the soil will allow our plants and soils microbes to utilize what they need for a healthy life. Also, wood ash helps to raise the pH of acidic soils - this is the calcium carbonate component (aka garden lime). Most soils could use this unless you are growing acid-loving plants like blueberries. See NOTE below.

Ash from our fireplaces and wood stoves are not "waste"!

How is it used?
Ash from our wood stoves and fireplaces can be used if we did not use chemical starters, burned chemically treated woods, burned non-plant material including cardboard and particle board which contains toxic glues. Ash can be mixed directly into the compost pile. Just sprinkle a little ash on each layer. Wood ash can be sprinkled directly on the soil (in the Spring) and lightly worked into the top layer around plants that could benefit from a boost of potassium, calcium, and pH. Hardwoods will produce three times as much ash and five times as many nutrients than softwoods.

Application:
If you soil has adequate potassium levels: 3-5 lbs per 1,000 square feet
If you soil has medium potassium levels: 5-10 lbs per 1,000 square feet
If you soil has low potassium levels: 10-20 lbs per 1,000 square feet
or
about one half to one pound ash around each shrub

Composition:
NPK Ratio:  0-1-3 to 0-1.5-8 (depends on the source of wood, the age of the ash, and other factors)


A GENERAL NOTE ABOUT FERTILIZERS:
Always test your soil before adding any fertilizers.  We can easily damage our plants and the soil by indiscriminately adding soil amendments.


Sunday, February 19, 2012

Permaculture Plants: Good King Henry



Good King Henry was once a well known plant with many edible parts.

Common Name: Good King Henry
Other Names: Lincolnshire Asparagus, Lincolnshire Spinach, Poor-Man's Asparagus
Scientific Name: Chenopodium bonus-henricus
Family: Amaranthaceae (the Amaranth Family)

It produces well in shade making it a great groundcover plant.


Description:
This is a small perennial herbaceous vegetable that was once well known in England and central/southern Europe. While it has naturalized in the U.S., it is a rather uncommon food there. Good King Henry is in the same family as spinach, and its leaves are used in much the same way; however, its shoots are eaten like asparagus, flower buds like broccoli, and the seeds are an edible grain. Add its ability to grow in the shade, and this is a great plant to add to your Edible Forest Garden or other Permaculture plantings.

Chenopodium bonus-henricus
Prof. Dr. Otto Wilhelm Thomé Flora von Deutschland, Österreich und der Schweiz 1885, Gera, Germany

History:
Good King Henry was once very popular in Europe and England, and it was grown for hundreds of years until the end of the 19th century. While still used by some (the broccoli-like flower buds are considered a gourmet food), it is now mostly seen as a weed.

Trivia:
One source states that the name comes from the Tudor herbalists and likely has nothing to do with any of England's King Henrys. The Germans likely named it first, and they called it Guter Heinrich (Good Henry). Most plant historians think the English added the "King" to the name to give it a more interesting heritage.

Shoots, Leaves, Flower Buds, and even the Seeds are edible!

USING THIS PLANT
Primary Uses:

  • Raw Leaves - Raw leaves are bitter and contain oxalic acid, so they should only be eaten in moderation. Best in Spring and early Summer and used in a mixed green salad to vary the salad's flavor.
  • Cooked Leaves - Cooking destroys the oxalic acid. Makes a good spinach substitute. Often used with a mixed cooked green meal (kale, spinach, chard, sorrel, dandelion, etc.). Older leaves become tough and bitter, so cooking is needed; however, after flowering the leaves become larger and more succulent. Younger leaves just need to be steamed for a few minutes. 
  • Shoots - Very popular, harvested and prepared just like asparagus (cut when about 5 inches (12 cm)).
  • Flower Buds - Prepared and cooked like broccoli, but much smaller and a little tedious to harvest.
  • Seed - A decent supplementary grain source. Needs to be soaked overnight and rinsed to remove the saponins (soap-like chemicals) much like its relative, quinoa. Ground and usually mixed with other flours.


Secondary Uses:

  • Decent groundcover plant - clumping, plant at 1 foot (30 cm) spacing for groundcover
  • Green/gold dye obtained from the whole plant
  • Reportedly considered a gentle laxative that can be used with children
  • Reportedly used to weaken parasitic worms (vermifuge) in the human body


Yield: Reported in one book that 30 plants would be good for four people
Harvesting: Plant parts can be harvested from Spring through Autumn (see Uses above)
Storage: Leaves wilt quickly after harvest, so plan accordingly if planning on using fresh.

Good King Henry's flower buds are eaten like broccoli.

DESIGNING WITH THIS PLANT
USDA Hardiness Zone: 3-9
AHS Heat Zone: None identified

Plant Type: Small to Medium Herb
Leaf Type: Deciduous
Forest Garden Use: Herbaceous Layer, Groundcover
Cultivars/Varieties: Almost no improvement breeding has been done with this plant

Pollination: Self-Pollinating/Self-Fertile
Flowering: May-October depending on the USDA Zone where it is planted

Life Span: No good information on the life span for this plant, but as it can spread well through self-sowing, this may be irrelevant.

The young leaves can be eaten raw, but typically the leaves are cooked.

PHYSICAL CHARACTERISTICS OF THIS PLANT
Size: 1-3 feet (30-90 cm) tall and 1-1.5 feet (30-45 cm) wide
Roots: Main taproot that has many small fibrous/tangled side roots. Can be quite deep.
Growth Rate: Medium

Great illustration of Good King Henry - 1777.

GROWING CONDITIONS FOR THIS PLANT
Light: Prefers full sun to light shade
Shade: Tolerates and still grows well in medium shade
Moisture: Medium, however it is not very drought-tolerant
pH: fairly neutral soil (5.5 - 7.5), but not very picky

Special Considerations for Growing: 
If grown in a hot and/or dry climate, it will produce better in shade.

Propagation: By seed. Does not need stratification for germination. Large clumps can be divided in Spring and directly replanted.

Maintenance:
Minimal. Grows well with neglect. Few pests.

Concerns:

  • Poisonous – Leaves contain oxalic acid when uncooked (large amounts need to be eaten for this to be toxic).
  • Dispersive - Easily spreads.  Can deadhead or harvest flower buds/flowers before it goes to seed.
  • Some people may have seasonal allergies to the flower's pollen