Alchemy is a main mechanic of Alchemy Garden.
Potion components must be placed in the upper three slots and log in the lowest one in order to brew the mixture. If reactive text appears, a potion will result. If it's non-reactive there's no possible mixture. You can discover up to 12 potions experimenting with the different components.
The potions you create may have different uses: you can earn some gold by selling them in your store, you may need them to complete quests, or you can drink them and experience their effects (stamina burst, move faster, levitate...). The higher the potion degree, the longer its effects will last.