I'm needing to know what kind of sheet cake do I need to use to carve a "4" and "0" out of? The lady won't really tell me how many ppl she is expecting to be at the party? I have noticed that most ppl are carving them out of 11X15 pans. Can you use a 9X13? I know it will be smaller but will it be big enough to carve a 4 out of? Please help me! I have never done anything like this before!!!
Without knowing the number of servings you need, i don't know how you would determine the cake size needed. I made a 40 cake by baking one square cake and one round cake. I carved the 4 out of the square and slightly carved the round cake to make a 0.
You need to get the number of servings from your client before you bake your cake.
Here's a guide to doing it with a square cake.
But I absolutely agree, you need at least a rough estimate of how many people there will be...