Mrs. John Martin'S Sponge Cake - cooking recipe

Ingredients

5 egg yolks
2/3 c. water
1/2 tsp. lemon flavoring
1 1/4 c. sugar
1 1/2 c. flour
1 1/2 tsp. baking powder
1/4 tsp. salt

Preparation

Beat together egg yolks, water and flavoring, then add sugar and beat again.
Sift together remaining ingredients.
Add last 5 egg whites, beaten until very stiff.
Bake at 350\u00b0 or lower.