As for "yayaka bakes bitter things!?" I went with the google translate suggestion, because I can't find a translation for あき that makes sense in the context. I have a bitter feeling that there's some sort of word play that goes over my head.

Walles said:

As for "yayaka bakes bitter things!?" I went with the google translate suggestion, because I can't find a translation for あき that makes sense in the context. I have a bitter feeling that there's some sort of word play that goes over my head.

It's a すき.