More on pectin and canning.
*** Apple Pectin ***
7 large apples
4 cups water
2 tablespoons lemon juice
Wash tart apples. Cut in pieces but do not peel. Add water and lemon
juice. Boil for 40 minutes. Press through jelly bag, then strain
juice through a flannel bag without pressure. Boil juice rapidly 15
minutes. Pour into sterilized jars and seal. Process 5 minutes in
boiling water bath.
Use for jelly making from such fruit as peaches, strawberries,
cherries, etc., or any fruits lacking in pectin. Add 1 cup apple
pectin for each cup of fruit juice used. Usually 3/4 cup sugar to 1
cup of the combined juices is correct, or test combined juices for
pectin content.
To test for pectin.
The juice may be tested to determine whether it contains sufficient
pectin to make jelly. The amount of pectin will indicate the amount
of sugar to be used.
Mix 2 teaspoons sugar, 1 tablespoon Epsom Salts, 2 tablespoons cooked
fruit juice. Stir well and let stand for 20 minutes. If mixture forms
into a semi-solid mass the juice contains sufficient pectin.
To test for acid.
Juice high in pectin may lack acid to make good jelly. The fruit
should be as tart as one teaspoon lemon juice mixed with 3
tablespoons of water. If necessary, lemon juice may be added to the
fruit juice. Usually one tablespoon lemon juice to each cup of fruit
juice is sufficient.