Grape Jam

By Tessie2



2 quarts Concord grapes
6 cups sugar
To prepare pulp: Separate pulp from skins of grapes. Chop skins. Cook gently 15 to 20 minutes, adding only enough water to prevent sticking, about 1/2 cup. Cook pulp without water until soft. Press through a sieve or food mill to remove seeds.
To prepare jam: Combine pulp, skins and sugar in a large saucepot. Bring slowly to a boil, stirring until sugar dissolves. Cook rapidly to the gelling point, about 10 minutes. As mixture thickens, stir frequently to prevent sticking. Remove from heat. Skim foam if necessary. Ladle hot jam into hot jars, leaving 1/4th inch headspace. Adjust two-piece caps. Process 15 minutes in a boiling water canner.
Yield: about 3 pints.