Egg Yolk Sponge Cake. Let them sit and firm then add the cream of tartar and mix gently. Add boiling water and fold in quickly just until liquid is blended.
Step 4 Add flour that has already been sifted with baking powder and salt. Fold in the sifted flour and milk until combined. 6 rows Add a few tablespoons of egg dough to the mixture stir and then pour in the rest of the dough.
Step 2 While still beating pour in hot water in a thin stream.
Its not only delicious but also cheap. Let them sit and firm then add the cream of tartar and mix gently. Step 3 Add extract. Sponge cake is a type of foam cake where the tall and airy texture comes from whipped eggs without chemical leaveners like baking soda or baking powder.