I've been making a lot of cakes recently and I've been noticing that tell all have bumps, wrinkles or holes on the surface. Although it doesn't matter much, does any know how to get a smooth surface on cakes? Thank-you!
Most surfaces will be rough when looked at closely enough. Bubbles are introduced when you mix the ingredients together (perhaps more if you use a high-speed machine beater & less if you do it by hand) and as a natural part of baking, from baking soda etc. That's what makes the cakes more light and airy as opposed to thick.
Turn it over! It's flat on the bottom. You may have to trim the top to get it to lie flat. I do this all the time, especially for layer cakes like Black Forest.