Drinking coffee will grant some buffs similar to have potions work, making it is a multi-stage process starting with Coffee Beans from the Agriculture system.
Haste and Speed for 15 seconds
The Speed buff increase around 20% of your Walk Speed
The Haste buff increase around 33% of your Mining Speed
Coffee, Dark Coffee and Cold Coffee give the same buff
Obtaining Coffee Beans is done using cross-breeding. The easiest way to cross-breed Coffee beans is as follows:
Crossbreed two reeds to obtain stick reed. Then breed two stick reed to obtain Ferru. Ferru needs an iron ore block underneath to fully mature. Add iron at this point. Finally, breed two Ferru to obtain Coffee beans. Coffee may be grown regularly at this point.
First the coffee beans must be processed into powder:
It is then placed within a Stone Mug and mixed with water:
It is then warmed up in a furnace:
And finally milk and sugar is added:
See: Crafting Guide
Coffee, Dark Coffee and Cold Coffee are drinkable.
The Coffeenators sent two man to their crops and even if their technique is much more lacking, those two guys can definitely keep up with their Coffee Harvest. And there the Macerators start running, frying nearby bots and processing the Coffee Beans harvested by our challengers.
The Coffeenators are still busy mixing up WaterCells with CoffeePowder into their 7-Ton-SmoothStoneMugs.
On the other side of the map, the Coffeenators are busy "smelting" their ColdCoffee into refreshing and really HOT DarkCoffee. Some say only the weak need to heat up their coffee, I say... OMG! DID YOU SEE THAT! AMAAAAAAZING move of the Coffeenators, a combined DarkCoffee-Milk-Sugar-Combo taking out THREE of the Scottsbeer AT ONCE! TRIPLE KILL!
The Coffeenators clearly have won!