Chocolate Roll-Up - cooking recipe

Ingredients

5 egg whites
1/2 tsp. cream of tartar
1 tsp. vanilla
1/2 c. sugar
5 egg yolks
1/2 c. sugar
1/4 c. flour
3 Tbsp. cocoa
1/4 tsp. salt

Preparation

Beat whites, cream of tartar and vanilla until stiff, but not dry.
Gradually beat in 1/2 cup sugar.
Beat yolks until thick and lemon colored.
Sift remaining ingredients; fold into yolks until blended.
Fold yolks into whites.
Line a 15 1/2 x 10 1/2-inch jelly roll pan with waxed paper; grease.
Spread batter in pan. Bake in slow oven (325\u00b0) for about 25 minutes.