This is a fun game! The core concept and mechanics are really good. The combine concept has been used really well in a cooking scenario. Well crafted scoring rules. It’ll take some time to understand and optimize for all of them. Also liked the refresh and remove options with limits on usage. Once an item is added to the cauldron, I'm not sure if there's a way to see the rules for that item. Might be useful to show some info on hover, for example. Got to a score of 94 after several attempts. Good job overall :)
(Minor bug: the audio played only on the left speaker. Sometimes this happens if you use AudioStreamPlayer2D instead of just AudioStreamPlayer.)