Blue Berry Seeds are a farmable item that players utilize the output of at a Mixing Table. Facepunch added teas and farmable berries in the Mixing Table Update on August 6, 2020.
Players can collect the blue berry seeds by consuming Blue Berries, either grown in the wilderness or in planters.
Blue berry seeds can be grown in Large Planter Boxes or Small Planter Boxes and watered for a higher yield from blue berry bushes, which will provide 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.