steffla, this is exactly why (as I've posted a number of times) that I REFUSE to use the terms "half sheet" or "full sheet". Believe me, the general public has no idea what size they are either .... they are just using the lingo. A sample conversation:
customer: how much is a sheet cake?
customer: how many does that serve?
Shouldn't you have an idea of how big the freakin' cake is before you try to order one?????
When I am asked "how much is a half sheet cake?", I just turn it around and ask them how many people they are wanting to serve. Then *I* tell THEM what size cake they need.
The good thing about sheet cakes is you can just do the math when figuring servings (I've used this example so often that I just have it saved in a word document so I can cut-n-paste it in here):
With square or rectangle cakes, it's easy to just do the math to figure your servings.....
11x15 cake: 2x2" servings = cut columns/rows of 5x7 = 35 servings
11x15 cake: 2x3" servings = cut columns/rows of 5x5 = 25 servings
12x18 cake: 2x2" servings = cut columns/rows of 6x9 = 54 servings
12x18 cake: 2x3" servings = cut columns/rows of 6x6 = 36 servings
These are based on a single layer cake. If you bake two layers, then you will probably cut the pieces into 1x2" pieces to yield different serving amounts.
Double layer (pieces are 4 tall same as a wedding cake):
11x15 cake: 1x2 pieces = cut columns/rows of approx 10 x 7 = 70 servings
12x18 cake: 1x2 pieces = cut columns/rows of approx 12x 9 = 108 servings
Just do the math.....!
What would you price a sheet cake at? My recommendation is to come up with a good base price per serving (mine is $1.50 for a 2x2") and go from there. Dont' worry about the actual size of the pans .... figure the servings of the pan sizes you have and work from there.
Dont' get hung up on labels ("half sheet"). Find out what the customer NEEDS and go from there.
My sheet cake price list shows:
(1) size of the cake (dimensions such as 12x1
(2) Serving size of the piece of cake (2x2" or 2x3")
(3) The number of pieces you can get with each cutting dimension (on the 12x18, I show the client that they can get 36 pieces if cut 2x3 and they can get 54 pieces if cut 2x2)
(4) Price (which is $1.50 per serving using the 2x2 size
Anyone who is interested in seeing a copy, PM me your email and I will be happy to send it to you.