2 egg yolks, beaten
1 15-ounce can sweetened condensed milk
1/2 cup lemon juice
1/4 teaspoon salt
1-1/2 cups cooked chopped prunes
2 egg whites, beaten stiff
18 graham crackers
Beat the egg yolks until light and stir in the condensed milk, lemon juice, and salt. Fold in the prunes and beaten egg whites. Put in a buttered dish in layers with the graham crackers and chill overnight.