Question for someone who makes cakes without a recipe. I have got some weird recipes for cakes, eg containing lettuce, and have been experimenting on my own as well. What are the outer limits of the ratios for flour to sugar to eggs? I can't get organic sugar easily so sometimes I am trying to substitute maple syrup or honey or sweet fruit such as raisins/ dates. How do you estimate correct proportions of sugar substitutes? Some recipes are egg free and seem to add vinegar instead. Is this an egg substitute? Does it have to be white wine vinegar? If you want to add in things like oats, does it mean you then need to reduce the amount of flour? Finally, when the cake goes wild and spills out of the cake tin, is this because of adding too much baking powder, or because of letting the cake sit around after adding baking powder, before putting in oven?