|Release date||15 February 2005 (Update)|
|Quest NPC||Ghosts Ahoy|
|Sells items||Ale yeast|
|Examine|| In his former life an expert brewer.|
Metarialus teaches players how to brew ale and cider (see Brewing), and has a supply of ale yeast for players to buy. Players will need to pay five Ecto-tokens and provide their own empty pot, which Metarialus will fill with yeast.
- Metarialus, in Latin means "matter".