Liam Rutherford aka your sorcerer friend,you lost a bet with him so you have to help him testing potions,though he promised you you wouldn't die.

"Here..a green potion..this supposed to make you taste everything like candy"

he handed you the potion sample to try as he take his notebook to write down your reaction,this is the consequenses of being the only human learning potions in all sorcerer/witch school.

but this is actually helpful,so you know how potions work by the colors.