Hello!
The game is adorable! But I'm stuck with the last ingredient (last one from the list).
There's something that looks like that could be it, but I've been jumping around all the playable area and I can't see any more exclamation mark icons. Pressing E repeatedly to try and interact with something doesn't work either.
Might be a bug! (or I might be missing some clue!)
Anyways, the art and the music are beautiful.