Boiled from roasted coyote tobacco chew and honey mesquite pods, black coffee is a good way to stay awake in the middle of the night as well as improving alertness, which makes repairing things, medical treatment and solving theoretical/practical problems easier. However, it comes with the negative drawback of making it harder to maintain focus in pitched combat. Although black coffee contains addictive coyote tobacco chew, the drink itself is non-addictive. When drinking the coffee, a coffee mug may be added to the player's inventory, although there is a chance that it may break.
The effects of the item to INT/AGL respectively depend on the level of the Survival skill.