Sponge Cake

Here's another recipe that grandma placed a big "X" next to signify that she liked and used it.

1 cup sugar
1/2 cup water
3 eggs
1 cup flour
1/2 tsp. salt
2 tsp. baking powder
1 tsp. vanilla or lemon extract
1/8 cup cold water

Boil sugar and water without stirring until syrup spins a thread and add slowly to beaten egg whites, beating until mixture is cold; sift together three times, flour, salt and baking powder; beat egg yolks until thick; add a little at a time, flour mixture and egg yolks, alternately to white of egg mixture; add cold water and flavoring; mix lightly. Bake in ungreased tin in moderate oven about one hour.