After an hard days mining you can really work up an thirst, So why not quench it with some Booze! Just pop your favorite ingredients along with some water and sugar into the handy IndustrialCraft-Still and soon you too can be staggering around causing mischief and falling down your own mineshafts!
May have some side effects such as poison-like effect while drunk, and some beneficial ones (such as those caused by Minecrafts potions). Using different ingredients like Apples, Watermelon etc would change the effects each drink would have. These could be things like increased run speeds, faster health regen, or anything else that takes the fancy of modders. All hail the mighty and potentially wrathful modders!
*Goes off to hide in an corner to avoid any potential wrath*