Hi guys, I'm due to make a handbag cake in a few weeks and it's to feed about 90 people. How much cake should I make? I was thinking of baking the sponge in either square or rectangular tins, then stacking to give a tall cake. 

Thanks in advance :) 

 That sounds like a giant handbag!

I am not the expert on serving sizes but our friend Wilton is lol

http://www.wilton.com/cakes/tiered-cakes/serving-amounts-all.cfm

all rounds:

6" x 3"
10" x 4"
12" x 4" serves 95

this size for example serves 95 but that is no sculpting waste

It also seems like a transporting nightmare

Very interested to see what others will say

Best

Theresa

I have had a similar request in the past. I put a normal sized purse cake on a sheet cake (actually used the largest oval Wilton pan) for the base. Worked great and got the number of servings needed.

 Hope this helps! 

Maybe I'll have to make a smaller cake on the side to get the right amount of servings... It's hard to judge as everyone cuts different sizes of cake, like I would cut a massive piece to myself lol. 

Yeah I think I'll do a separate plain one, just to be safe. Don't want it collapsing on itself!

Thanks your help guys :)