Certo: A Short Cut to Better Jams and Jellies

by General Foods Corporation

GRAPE JAM

5 cups (2½ lbs.) prepared fruit

7½ cups (3¼ lbs.) sugar

½ bottle Certo

To prepare fruit, slip skins from about 3½ pounds fully ripe grapes. Simmer pulp, covered, 5 minutes. Remove seeds by sieving. Chop or grind skins and add to pulp. (If wild grapes, Malagas, or other tight-skinned grapes are used, stem, crush, and simmer with ½ cup water 30 minutes. Sieve and measure. Use 4½ cups prepared fruit and ¼ cup lemon juice.) Measure sugar and prepared fruit into large kettle, mix well, and bring to a full rolling boil over hottest fire. Stir constantly before and while boiling. Boil hard 1 minute. Remove from fire and stir in Certo. Stir and skim for 5 minutes. Pour quickly. Paraffin at once. Makes about 12 glasses (6 fluid ounces each).