Plum Kuchen-tenderizing the batter w/o milk products
I have a plum cake I often make, but the batter is too tough and dry. It calls for 3 eggs, 1/2 c. flour, margarine (for a kosher meat meal,no dairy is allowed, so sour cream is not an option) sugar and vanilla. I would like to soften it. Should I try and extra yolk? a bit of baking soda?