Please correct me if I have this mixed up but a kitchen cake is one that matches the layers of the wedding cake, right? How many servings do you get from a 13x9 kitchen cake? I know sheet cakes say 24 servings so are kitchen cakes double the servings since they are much taller?
Exactly. Double the servings for double layer.
The sheet cakes in this chart are based off of 4in tall tiers.