2 Egg Sponge Cake

2 egg yolks
2/3 c. cold water
1 1/4 c. sugar
1 1/2 c. flour
1/4 tsp. cream of tartar
1 tsp. lemon extract
2 egg whites

Beat egg yolks and cold water until they make 1 quart in volume. Keep beating and slowly add sugar, beat for 8 more minutes. Continue beating and add in flour, cream of tartar and lemon extract. In a separate bowl beat egg whites, until stiff. Fold into other mixture. Pour into sponge cake and bake at 350 degrees for about 45 minutes.