That was a mistake.
I’ve made plenty of weird things or things with weird ingredients, but even my most failed experiments have been things that I could finish. I am full of regret. And mustard.
The cake itself was fine. I wouldn’t even be opposed to making it again. The tomato in the ketchup adds a nice subtle flavor to the spice cake. But oh god, the frosting. The worst part is, I could even see it working! The very first taste is a little weird, but not entirely unpleasant. But then the vinegar & mustard start to come through, and then it’s all you can taste. And it overpowers everything else. Even scraping the frosting off the cake couldn’t save it.
The problem is it uses so much mustard. Far more liquid, and acidic liquid at that, than any natural buttercream frosting. The frosting broke & we had to add more butter just to get it to even start to stay together. If it had used just a third of the mustard, it might have been somewhat palatable. But even then, probably too much.
Anyways, pictures:
BEFORE:
PROCESSING:
PROCESSING:
PROCESSING:
REGRET: