Repo steps:
Die and respawn to reset.
Drink anything that is alcohol (Black Lotus Potion for example)
Wait until your character receives the “Headache” debuff
Eat a feast of yog (or any other feast)
Observe that the character gets 50 points more stamina
Wait until “Headache” debuff runs out.
Observe that the character gets another 50 points of stamina