Coffee

[Jovus]

The whole idea was to NOT have addiction be part of it. The positive effect should be small, because the negative effect should only be the time/space you sacrifice for the coffee production. Coffee isn't really addictive IRL either.

My wife would disagree with you. If she goes more than roughly 28 hours without caffeine, she develops a powerful headache as a physiological withdrawal symptom.

(She also drinks about a liter of espresso a day, having a mind-boggling tolerance.)

[Greep]

Coffee as a thing isn't really addictive, but caffeine is   You can replace coffee with soda or tea or whatever, but suddenly stop caffeine and you'll notice for weeks/months/years.

[Anarcraft]

In real life roasted unground coffee has a shelf life of 15 days, don't believe what the labels say!