can i melt chocolate and leave it to thicken up slightly and cover a cake the way u would normally use ganache to cover a cake? I have to cover a cake in Ganache but forgot to make it and leave it to set up overnight.
no. It would set up so hard that you couldn't cut the cake, or if you could get a knife through it, it could just shatter.
You don't have to let ganache set up overnight. That's why we have refrigerators.
I had to remake ganache for a cake recently. I made it and used it with in 2 or 3 hours I believe. I did put it in the fridge a little but, but I was afraid, since it was in a metal bowl the part against the bowl would cool and get hard faster than the rest.
I did start spreading it on the cake when it was still a little softer than I would have liked, but it firmed up very fast once on the cake.
Thanks for your replies, appreciate it