I give up. I can't seem to find the perfect extra for my soap soup. This was fun! I encountered a couple of bugs though. The voice over doesn't seem to stop when moving to something else. There were times that I could hear three different things being said at the same time. And no, I can't turn voice over off, even though I'm perfectly capable of reading. Because, you know, I just love voice overs.
Another thing which I don't whether it was a bug or a feature, was that some ingredients weren't there at first and somehow suddenly appeared. Pizza crust and bacon are two that I remember. And I don't think the chicken was always there either.
Anyway, enough with negativity. I liked that there were a lot of text written for different combinations and different ingredients. That's another thing I enjoy.
All in all, I'd consider this an excellent concept. I'm very likely to buy a fully fledged game built around this idea. Great job.