In order to be able to make Barbarian mixes, Otto Godblessed must be talked to, located at Otto's Grotto (west of Baxtorian Falls). He will teach the basic Barbarian skills needed to get the special ingredients for these mixes. He also teaches the decanting of 4 dose potions into two 2-dose potions by using any 4-dose potion on an empty vial. Barbarian potion requirements: * 2-dose potion (or a 4-dose and an empty vial) * Roe (for Attack mix, Ranging mix, Magic mix, Anti-poison mix, Relicym's balm mix, Strength mix and Restore mix) * Caviar (for all other mixes).