Is there any way you can take a regular cake recipe and turn it into a cake suitable for Passover? Meaning, can you follow some sort of a formula so that any time you see "flour" and "baking powder" in a regular cake recipe you could simply substitute matzo meal, potato starch, and egg whites, etc.?
Also, many recipes I've found use margarine and I find that really unappealing. Are passover dishes also supposed to be non-dairy? If so, could I just substitute oil or would that affect the structure of the cake?
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