Possibly silly question about sponge

[eagle2010]

So I bought a 1 - shaped cake tin to make DS's birthday cake next week.

I'm just going to make a Victoria sponge and ice it.

My question is: how do I know the quantity of sponge to make? The tin says it's 10" x 8" but obviously it's not uniform!

Please be kind in your replies

I think you will need to experiment. I would start with a mixture made from 3 eggs (weigh them in their shells) then same weight of butter, sugar, SR flour and add vanilla plus a teaspoon of baking powder.
Fill the number to 3/4 way up the tin. Then if any mixture left use that for some fairycakes.

If you have a tin that you know the quantities for, measure how much water it takes to fill, then do the same with the no.1 tin. If your usual tin takes 1l of water and the no.1 tin takes 2L, double the mix and so on.

Thank you ladies, I think I'll do some experimenting this weekend!

We'll be eating a lot of sponge over the next few days I think

Personally I wouldn't do a Victoria sponge for this, I would feel it's a bit light, I use the BBC easy vanilla cake for all my big cakes, it holds well and tastes delicious!

Thanks for the Nigella tip, waswondering! I looked out my copy of Domestic Goddess and read up about the buttermilk cake.

I've had success with her recipes before so I think I'll try this one out.

You definitely need a sturdier cake than victoria sponge, and do experiment with the water so you don't waste the ingredients trying to get it right. Look for a recipe for madeira sponge

Nigella promises that this recipe is super sturdy for all sorts of moulds so I'll trust her

It is just a question of maths really. Just measure the area of the cake pan. If, for example, it is 10" tall, and 2.5" wide, with a base to the "1" being 8" long and also 2.5" wide, that will equate to around (allowing a bit for the "tick" at the top of the "1") 40 square inches. That would equate to a round tin of 7", or 6.5" square (6.5x6.5=42.25 sq inches). OK, you don't get 6.5" square, but 6" square recipe might make the cake a little thin, so go up to 7" square and make it a bit thicker. You will just have to give it a little longer in the oven.

Thanks so much for the Nigella tip waswondering. Cake turned out perfectly!