Hi There

I have my first wedding cake order coming up and I am a little stymied by the size of it. It is a 5 tier cake - 14, 12, 10, 8, 6. My usual recipe makes a 3 inch high 10 inch round and bakes for about 2 hours. How much do I scale it up for the 14 inch, 4 inch high cake? Also - how much longer should I bake it for?

Alternatively, does any one have a large recipe that will make this size cake?

Thank you

Usual recipe: pi x radius squared x height = volume
22/7 x 5 x 5 x 3 = 235.7 cubic inches

Required size: pi x radius squared x height = volume
22/7 x 7 x 7 x 4 = 616 cubic inches

To scale the 10" recipe to fit the 14" tin:
616 divided by 235.7 = 2.6
ie all ingredients need to be multiplied by 2.6

I would estimate at least 8 to 8.5 hours baking time.

Thank you so much!! 8 hours sounds like forever! If the 10 inch takes 2 hours, shouldn't the 14 inch take 2 x 2.6 = 5.2 hours?

Two hours for a 10" round seems to be a bit quick. If I am in a "hurry", I use one of my 10" UK recipes that is 150ºC to 140ºC after 1 hour [130ºCFF to 120ºCFF] for a "fast" 4 hours. But mostly I use my tutor's recipe which I bake at 110ºC for 6-7 hours .. Once a cake reaches 10-inches, it's low and slow for the best result..

Again, I would estimate at least 8 to 8.5 hours baking time. for 14-inch round 4 inch high fruitcake.. But it is always your choice ..

Okay - that makes sense. Thanks a lot!