Hi, thank you for your feedback. I can explain the speed effects: Putting coffee to the brain makes the player faster and putting beer to the brain makes the player slower for a while. Sounds reasonable, no? ;)
That does make sense! In that case, you could add some more feedback to help communicate that, otherwise it just looks like another piece of food. Maybe you could give both of them particle effects. The coffee could have fast moving particles and could be vibrating/shaking itself. The beer could have slow moving particles. And with the beer, I feel like there isn't really a reason to use it if it slows you down, especially where you need to go fast to get everything done. What if instead, the beer slowed the game down, but not the player, then both drinks have a reason to be used.