Chocolate Nut Torte(Passover)  
["8 eggs, separated", "1 c. sugar", "1/2 c. cocoa", "1/2 lb. walnuts, chopped", "1 tsp. vanilla"]
["Beat egg whites stiff.", "Mix yolks with sugar in separate bowl and beat until thick and lemon colored.", "Add enough water to cocoa to make a thick paste.", "Add to yolk mixture and blend.", "Add nuts and vanilla.", "Fold in egg whites.", "Bake in 10-inch spring-form pan 35 minutes at 350\u00b0.", "Serve with whipped cream if desired."]
["eggs", "sugar", "cocoa", "walnuts", "vanilla"]