Blue Berries are a consumable item that players utilize at a Mixing Table. Facepunch added teas and farmable berries in the Mixing Table Update on August 6, 2020.
The Blue Berry is a collectible food item found in small berry bushes on the ground in grassy and forested biomes.
While the Blue Berry provides minimal calories and hydration, eating the blue berries you find will give you Blue Berry Seeds.
Blue berry seeds can be grown in the ground, in Large Planter Boxes or Small Planter Boxes, and watered for a higher yield from Blue Berry bushes, providing more Blue Berries and Blue Berry Seeds when harvested.
The Blue Berries can then be used in the mixing table to produce Basic Wood Tea and Basic Ore Tea.
Wood and ore teas improve your gathering rates on trees and metal nodes, respectively, making these teas very useful for solo players, particularly early in the wipe.
Once you produce several basic teas, you can combine 4 of the same type to create an advanced tea. Then you may make a pure tea by combining 4 of the advanced teas.