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Grapes - Muscadine
Preparation - Select fully ripe firm sweet grapes. Sort, stem and wash.
Whole Grapes - Prepare same as for regular grapes. Deseeded Grapes - Separate pulp, from hulls, saving both. Heat pulp to boiling to separate seed. Mix juice with hulls and boil until the hulls are tender (15 to 20 minutes). Mix softened hulls with deseeded pulp. Add one part sugar to six parts grapes, stirring until sugar is dissolved. Cool and pack, leaving headspace. Seal and freeze.
Grape Juice - Prepare same as for regular grapes.
Headspace to Allow Between Packed Food and Closure
*Fruit packed in juice, sugar, syrup or water; crushed or pureed fruit.
**Fruit or vegetable packed without added sugar or liquid.
Syrups for Use in Freezing Fruits
** In general, up to one-fourth of the sugar may be replaced by corn syrup or mild-flavored honey. A larger proportion of corn syrup may be used if a very bland, light-colored typed is selected.
To make the syrup, dissolve sugar in lukewarm water, mixing until the solution is clear. Chill syrup before using.
Use just enough cold syrup to cover the prepared fruit after it has been placed in the container (about 1/2 to 2/3 cup of syrup per pint). To keep fruit under the syrup, place a small piece of crumpled parchment paper or other water-resistant wrapping material on top, and press fruit down into the syrup before sealing the container.
Unsweetend Packs for Freezing Fruits
The dry pack is good for small whole fruits such as berries, that give a good quality product without sugar. Simply pack the fruit into a container, seal and freeze. A tray pack is an alternative that may make the fruit easier to remove from the container. Simply spread a single layer of prepared fruit on shallow trays and freeze. When frozen, promptly package and return to the freezer. The fruit pieces remain loose and can be poured from the container and the package re-closed. Be sure to package the fruit as soon as it is frozen, to prevent freezer burn.
Other Unsweetened Packs
In addition to a dry pack, unsweetened fruit can be packed in water, unsweetened juice or pectin syrup. Unsweetened packs generally yield a product that does not have the plump texture and good color of those packed with sugar. The fruits freeze harder and take longer to thaw. However, some fruits such as raspberries, blueberries, steamed apples, gooseberries, currants, cranberries, rhubarb and figs give a good quality product without sugar. The pectin syrup is often used for fruits such as strawberries or peaches, that retain their texture better than if frozen in water or juice.
These documents were adapted from the "Complete Guide to Home Canning," Agriculture
Information Bulletin No. 539, USDA, revised 2009 &
From "So Easy to Preserve", 5th ed. 2006. Bulletin 989, Cooperative Extension Service, The University of Georgia, Athens. Revised by Elizabeth L. Andress. Ph.D. and Judy A. Harrison, Ph.D., Extension Foods Specialists.