My cake is dough.

Ye shall offer up a cake of the first of your dough for an heave offering: as ye do the heave offering of the threshingfloor, so shall ye heave it.

The dough will be ready when it's ready.

If you're going to lick the icing off somebody else's cake you won't be nourished and it won't do you any good, or you might find the cake had caraway seeds and you hate them.

Debbie had to get up and slice me a thick piece of cake before she could answer. And I do mean thick. Harry Potter volume seven thick. I could have knocked out a burglar with this piece of cake. Once I tasted it, though, it seemed just the right size.

Oh, it can't be a reference to the fact Harry's a great Seeker, that's way too obvious. There must be a secret message from Dumbledore hidden in the icing!