Welcome to the Cake Decorators Q&A

How much white chocolate ganache do I need to fill and cover a 12″ cake, please?

Hello hmordey

You’ll find the quantity chart here http://www.cakeflix.com/blog/how-to-ganache-cakes-without-gnashing-your-teeth
It may also help you to read the accompanying blog which contains more information about white chocolate ganache.

Many thanks – this is really useful! Thank your husband too!