E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Cake Dough.
I wish my cake were dough again. I wish I had never married. Bellenden Ker says the proverb is a corruption of Ei whissche my keke was dhow en geen, which he says is tantamount to Something whispers within merepentance, would that my marriage were set aside.