Alright all of you professional cake decorators. The largest cake I have stacked is a 10,8,and 6 inch round...but I have a friend that needs a cake to feed around 100 people. So I am going to need bigger layers and more of them. I was wanting to do some square and some round. The largest cake pan I have is the 12 in round, can I stack a 10 in square on top of that and will it even look good? I'm just not sure of what combination round and square will look good and if the method of stacking the cakes is different when the layers are bigger? Any and all help would be greatly appreciated!
It can be done.
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There's a few more in my galleries or my website!
Edna 
Alternating various shapes makes for a gorgeous cake! Squares are tricky, you have to measure diagonally. A 10" square is 14" on the diagonal, and will overhang a 12" round. If you have the pans, stack them, see how they align.
I need to feed 100 from this cake and the largest cake pan I have is the 12 in round...so I'm thinking I would need to suggest that I do some sheet cakes to cover the remaining servings. Would that be tacky though? Thanks for all of your help ladies!
not sure what size pans you have, but could you do all round with 12-9-6? that will give you 101 serving the top tier.
Or 12" sq - 8" round - 6" round will give you 102 servings.
As for extra cakes, I would do kitchen cakes, not sheet cakes. (kitchen cakes are 4" tall and when cut look just like the tiered cake you did, sheet cakes are only 2" tall and definitely a noticeble difference when on plates with the wedding cake)
Thanks for explaining what kitchen cakes are! It isn't for a wedding, it is a graduation cake, but I would definitely do the kitchen cakes instead of sheet cakes. Thanks for all of your help, I think I know what I am going to do now! Thank you so much to everyone for your help!
If it's a grad cake, can you incorporate a couple of satellite cakes? For example, maybe have the 3-tier cake in the center and an 8" square (or round) on each side. If it were me, I'd split the date between the two satellites .... "20" on one and "10" on the other for the grad year of "2010". Or "Class of" on one and "2010" on the other.
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