Can You Buy Cake meal? Can You Buy potato starch? lemon Sponge Pudding * 1 Cup sugar * 1/4 Cup Cake meal * 1/2 Tablespoon potato starch * 1/8 Teaspoon salt * 2 Teaspoons oil * 4 Tablespoons lemon juice -- up to 5 Tbsp * 1 Teaspoon Grated lemon Rind * 2 Large eggs -- Separate Out Yolks * 1 Cup water Oven: 350 * 1-1/2 Quart Casserole or 6 Custard Cups. In a Large Mixing Bowl, Combine The Dry Ingredients. Stir in The oil, LemonJuice And lemon Rind. in a Small Bowl, Beat The egg Yolks With The water AndAdd to The lemon Mixture; Mix Well. Bake For 40 to 50 Minutes.