This was really fun and all the potions and ingredients were really well thought out. It reminds me (slightly) of the old Doodle God flash games and I found it really funny to see a witch in a medieval stone house doom scrolling in bed :)
My one suggestion would be to add an "empty cauldron button for if you want to cancel a reaction midway because it was not doing what you intended. For example, I tried to increase my caldron's output near the end of the game, but despite that recipe being one above wood fairy (and me adding a few extra of each ingredient to be safe), it just made a whole bunch of wood and grass fairies. Otherwise, the caldron worked fine for me.