okaY I have an order for cake to serve 300 ppl. Basically what they are wanting is sheet cakes, with just one decorated. so what I was going to do was do a 12x18 decorated and then one 12x18 iced sheet not
decorated and two full sheets (2 12x18 side to side) iced sheets not decorated. MY question is how many does a 12 x 18 really serve 1 layer? I have in my cake boss program that a 2 layer serves 54. But I have had others on here tell me that one layer serves 54. Can someone please tell me something??? I am planning on just doing these sheet cakes 1 layer. I just want to make sure they are getting the servings they ask for. Thanks for any help.
A serving = 8 cubic inches of cake, or 2" X 2" X 2". Your one layer cake needs to be 2" tall.
Therefore a 12 X 18 (2 inches tall) is cut 6 X 9 for a total of 54 servings.
If the cake is 4" tall, then the serving size is 1" X 2" X 4" which also equals 8 cubic inches (1 X 2 X 4 = 8 ) If the cake was 4" tall, then you'd cut 12 X 9 (or 6 X 18 ) both equaling 108.
From a one layer sheet cake you will be cutting a 2x2in serving. So a 1 layer 12x18 will serve 54. You will therefore need six 12x18in cakes (in whatever configuration you like) to serve 300 with 24 extra servings. HTH!
ETA: Make sure you charge for 324 servings!!!