I usually get order sheet cakes for 100 people and I have only 12x18 sheet cake pan so I usually bake two of 12x18 single layer cakes but some customers wants not two single layer cakes but one big sheet cake which could serve for 100.I can put two 12x18 sheet cakes together ( 18x24 size), but Can you find the box for this? I have checked some cake supply stores but haven't found right size for this cake. I found 18x24 box but this is too tight.
anyway.. if is there any idea to make a big sheet cake for 100, please
let me know.
Thanks.
I put two sheet cakes together, side by side, to form one large cake all the time. I have also found that two 12x18" cakes are slightly too large for a full sheet box (usually those boxes are 18x25). What I have done in the past is either trim two inches of cake off of the end (before frosting or decorating), or lately I have begun using a 12x16" cake pan and putting two of those together, side by side. It fits in the box perfectly. You will get 96 (2"x2" square) servings of cake if you use two 12x16" sheet cakes.
Hi Michele25,
That is a good idea to buy 12x16 but I usually make cakes for catering lady
and when she asks me to make cakes for 100 she wants for 100 or more. One day, she asked me to make a cake for 80 and I told her I can make a 12x18 double layer cake for 72 and she didn't like this size because of not 80 servings.
so I think I will talk to her before buying 12x16 pans.
Thanks
I told her I can make a 12x18 double layer cake for 72 and she didn't like this size because of not 80 servings.
I don't understand why your 12x18s only serve 72 when you stack them, but they serve 100 when you put them side by side. 
I told her I can make a 12x18 double layer cake for 72 and she didn't like this size because of not 80 servings.
I don't understand why your 12x18s only serve 72 when you stack them, but they serve 100 when you put them side by side.
slice size is different.
12x18 double layer ,1 1/2"x2"x4" slice
18x24, 2x2x2 slice
did you get it?
slice size is different.
12x18 double layer ,1 1/2"x2"x4" slice
18x24, 2x2x2 slice
did you get it?
Yea, I get it...
if your price per serving X's 72 (12 cu. in.) servings,
is the same price per serving X's 100 (8 cu. in.) servings,
it's the same total amount of cake,
so IF you charge the same price for either,
you'd be giving away free servings one way,
OR need to explain why the price per serving is different for the same cakes set up differently if you have different prices for each.
Additionally, if you can't control how the sheet/kitchen cake will actually be sliced, what's to stop the customers from saying they'll only cut it into 72 servings to be charged for 72 (if the price per serving is the same either way), when in reality they know they can get 100 standard-size servings cut from it?
It's also a good idea to let customers know that sometimes they have to order a little more or a little less. I cant' make a cake to serve exactly 17 people. They can order one that serves 24 (and PAY FOR the 24 servings).
They can cut the dang thing anyway they want, but I'm getting paid the same money to do the same work. 
Also agree totally with CWR's post. Your 1.5x2x4's are 50% bigger than the 2x2x2's, so theorectically your price per serving should be 50% more.
Example: A 12" square, cut in 1x2x4's, would be cut in 12 rows by 6 columns = 72 servings x $3/serving = $216.
A 12" square, cut in 1.5x2x4, would be cut in 8 rows by 6 columns = 48 servings x $4.50/serving (*) = $216.
When I buy a larger fry at McDonalds I expect to pay more because I got a bigger serving.
(*) $3 x 1.5% = $4.50/serving. The cake serving is 50% bigger.
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