Dwarven stout (m)

Mature Dwarven stout is a stat enhancing beer that temporary adds two smithing and mining level, as oppose to the Dwarven Stout, which adds only one level. This is especially useful when trying to enter the Mining Guild at 58 Mining.

This can be made by leaving Dwarven Stout in a vat. Then the beer could either go bad, stay normal, or turns to mature.

Dwarven stout can be made from four Hammerstone Hops, obtained from farming