This game's pretty solid. Took me a while to figure out what was going on (in fact, I was going to rate enjoyment on the lower end but decided to gave the game another go to make sure I was fully getting it), but once I did it was fun to mix everything up, heat the flask to get the colors just opaque enough without overdoing it, and periodically slamming it into the wall whenever an egg was involved.
Echoing what others have said, I wish there were more conditions with the items beyond heating them to an ideal temperature (which is really easy to do once you figure out what's going on), as well as upgrades to spend your money on as opposed to just more ingredients. Something you could experiment with to make the game more engaging is to put the player on a timer to create the potion, similarly to what other ingredient-combining games of this sort do. Could also be fun to have new flasks that provide different functions.
Gameplay aside, the character sprites are nice (the ingredients would've done well with similar outlines and contrast imo), and the bottle clink sound is great. Tbh I'm not really feeling much of a "spin to win" theme here (like yes you can spin the flask to mix them, but I don't feel like that sells it), but the core of the game is solid regardless. Good stuff!