Drying
Fruit Leathers
Compiled
by Alice Henneman, M.S., R.D., C.N., Extension Educator
and Nancy Malone, Extension Assistant
Adapted from "So Easy to Preserve", Cooperative Extension, The
University of Georgia, 1993
Fruit leathers
are homemade fruit rolls. They are a tasty, chewy, dried fruit
product. Fruit leathers are made by pouring pureed fruit onto
a flat surface for drying. When dried, the fruit is pulled from
the surface and rolled. It gets the name "leather" from the
fact that when the pureed fruit is dried, it is shiny and has
the texture of leather.
The advantages
of making your own fruit leathers are to use less sugar and to mix
fruit flavors. Leftover fruit pulp from making jelly can be blended
and made into fruit rolls.
For the diabetic
adult or child, fruit leathers made without sugar are a healthy
choice for snacks or desserts. Individual fruit leathers should
contain the amount of fruit allowed for the fruit exchange.
Directions follow
for making fruit leathers. Fresh, frozen or drained canned fruit
can be used.
HOW DRYING PRESERVES FRUIT LEATHER Drying
removes the moisture from the fruit leather so that bacteria, yeasts
and molds cannot grow and spoil the fruit leather. It also slows
down the action of enzymes, but does not inactivate them. Because
drying removes moisture, the food becomes smaller and lighter in
weight.
The optimum
temperature for drying food is 140 F. If higher temperatures are
used, the fruit leather may "case harden"; that is cook and harden
on the outside while trapping moisture on the inside. The fruit
leather will eventually mold when moisture equilibrates during storage.
Thus, the drying process should never be hurried by raising the
drying temperature. (See Table 1 regarding the suitability of various
fruits for making fruit leather.)
LEATHERS FROM FRESH FRUIT 1)
Select ripe or slightly overripe fruit.
2) Wash fresh
fruit or berries in cool water. Remove peel, seeds, stems and bruised
or spoiled portions.
3) Cut fruit
into chunks. Use two cups of fruit for each 13" X 15"fruit leather.
Puree fruit until smooth. If thick, add liquid to bring to a pouring
consistency.
4) Add two teaspoons
lemon juice or 1/8 teaspoon ascorbic acid (375 mg) for each
two cups of light colored fruit to prevent darkening.
5) Optional:
To sweeten, add corn syrup, honey or sugar. Corn syrup or honey
is best for longer storage because it prevents crystal formation.
Sugar is fine for immediate use or short storage. Use 1/4 to 1/2
cup sugar, corn syrup or honey for each two cups of fruit. Saccharin-based
sweeteners could also be used to reduce tartness without adding
calories. Aspartame sweeteners may lose sweetness during drying.
Table 1 - Fruits
at a glance
|
Fruit |
Suitability
for Fruit Leather |
| Apples |
Excellent |
| Apricots |
Excellent |
| Avocados |
Not
recommended |
| Bananas |
Fair
to good |
| Berries
with seeds |
Excellent |
| Blueberries |
Only
in combination |
| Cherries |
Excellent |
| Citrus
fruits |
Only
in combination |
| Citrus
peel |
Only
in combination |
| Crabapples |
Only
in combination |
| Cranberries |
Only
in combination |
| Grapes |
Fair
to good |
| Guavas |
Only
in combination |
| Melons |
Not
recommended |
| Nectarines |
Excellent |
| Peaches |
Excellent |
| Pears |
Excellent |
| Pineapples |
Excellent |
| Plums |
Good |
| Strawberries |
Excellent |
LEATHERS FROM CANNED OR FROZEN FRUIT
1) Home
preserved or store-bought canned or frozen fruit can be used. Applesauce
can be dried alone or added to any fresh fruit puree as an extender.
It decreases tartness and makes the leather smoother and more pliable.
2) Drain fruit,
save liquid.
3) Use one pint
of fruit for each 13" X 15" leather.
4) Puree fruit
until smooth. If thick, add liquid to bring to a pouring consistency.
5) Add two teaspoons
of lemon juice or 1/8 teaspoon ascorbic acid (375 mg) for each two
cups of light colored fruit to prevent darkening.
SPICES and FLAVORINGS To
add interest to your fruit leathers add spices or flavorings.
Spices
to Try--Allspice, cinnamon, cloves, coriander, ginger, mace,
mint, nutmeg or pumpkin pie spice. Use sparingly, start with 1/8
teaspoon for each two cups of puree.
Flavorings
to Try --Almond extract, lemon juice, lemon peel, lime juice,
lime peel, orange extract, orange juice, orange peel or vanilla
extract. Use sparingly, try 1/8 to 1/4 teaspoon for each two cups
of puree.
PREPARING THE TRAYS For
drying in the oven, a 13" X 15" baking pan with edges works well.
Line pan with plastic wrap being careful to smooth out wrinkles.
Do not use waxed paper or aluminum foil.
To dry in a
dehydrator, specially designed plastic sheets can be purchased or
plastic trays can be lined with plastic wrap.
POURING THE LEATHER Fruit
leathers can be poured into a single large sheet (13" X 15")or into
several smaller sizes. Spread puree evenly, about 1/8 to 1/4 inch
thick, onto drying tray. Avoid pouring puree too close to the edge
of the sheet; leave an inch or more of border to allow for spreading
during drying. The larger fruit leathers take longer to dry.
DRYING THE LEATHER Leather
dries from the outside edge toward the center. Test for dryness
by touching the center of the leather; no indention or sticky spots
should be evident. Dry until it is still pliable. While warm, peel
from plastic and roll, allow to cool and rewrap the roll in plastic
wrap or special plastic fruit leather sheets.
DEHYDRATOR
DRYING
It takes approximately six to eight hours for fruit leather to dry
in a dehydrator. Follow manufacturers directions. In general, fruit
leather should be dried at around 140 F.
OVEN DRYING
An oven can be used for occasional drying of fruit leathers. Because
the oven may also be needed for everyday cooking, it may not be
satisfactory for preserving abundant fruit leather. Oven drying
may take up to 18 hours for fruit leathers.
Oven drying
is slower than dehydrators because the oven does not have a built-in
fan for the air movement. (However, some convection ovens do have
a fan.) It takes two to three times longer to dry fruit leather
in an oven than in a dehydrator; thus, the oven is not as efficient
as a dehydrator and uses more energy.
To Use Your
Oven--First, check your dial and see if it has a reading as
low as 140 F. Check oven temperature on warm setting with an oven
thermometer. If your oven does not go this low, then your food will
cook instead of dry.
Low humidity
aids the drying process. To dry fruit leather, the water must move
from the fruit leather to the surrounding air. If the surrounding
air is humid, then drying will be slowed down. Avoid drying fruit
leather during rainy or humid weather.
Increasing the
air current speeds up drying by moving the surrounding moist air
away from the fruit leather. To speed the drying time, increase
the air flow. For air circulation, leave the oven door propped open
two to six inches. Circulation can be improved by placing a fan
outside the oven near the door. Change the position of the fan frequently
during drying to vary the circulation of the air. CAUTION:
This is not a safe practice for a home with small children.
Because the
door is left open, the temperature will vary. Place an accurate
and easy-to-read oven thermometer on the top tray toward the back.
Adjust the temperature dial to achieve the needed 140 F.
Maintain the
temperature at 140 F. It takes less heat to keep the temperature
at 140 F as drying progresses, so watch the temperature carefully
toward the end of drying.
STORING THE LEATHER Place
wrapped pieces in airtight, moisture proof containers such as freezer
bags, glass jars or freezer storage containers. Fruit leather will
keep about two to four weeks at room temperature when stored in
a dark, cool place. For storage up to one year, store in the freezer.
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