It's quite fun, for the short demo. The main problem I got was 1) it hang/stuck while I was submitted a guess, and 2) my save got overwritten while I restart b/c the new game option was in the center of the screen and there are no overwrite protection :(, and 3) I am confused why sometime some of the repeated ingredients guess will be highlighted twice, e.g. I guess protein x 3 and two other random ingredients, sometime two of the protein will lit up and sometime won't
And I don't think it is too hard to guess, although some unlucky configuration are impossible to guess, but as long as the fails aren't punishing, it's not the end of the world to re-try