Foulain

The foulain is a shrub about 15 inches high which gives very small dark blue fruits. In addition to the alcohol that is drawn from them, these berries have the virtue of slightly increasing the speed of movement, without however increasing fatigue.
Eating foulain berries increases movement speed by 5 feet per round, regardless of base speed. One dose keeps this pace for about 1 minute, so the effect is quick. Some people eat it before having to make a jump, for example. Only one dose takes effect between two short rests.