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The stuff

From the RuneScape Wiki, the wiki for all things RuneScape

"The stuff" is purchased from Honest Jimmy of the Trouble Brewing minigame on the pirate island of Mos Le'Harmless for 5 Pieces of Eight. To access the mini-game and shop (as well as the rest of the island), you must have completed Cabin Fever. The Stuff, apparently, contains some questionable and/or toxic content, as it has been banned by the Cooking Guild of Varrock. It does not actually cause any (known) negative side effects when brewing, however.

If added to a vat of brewing ingredients just before the hops, the player will have an increased 50% chance of brewing a mature ale.

To use the stuff, first put two buckets of water and two handfuls of barley malt in a brewing vat, and then add the stuff. Finish the brew by adding four handfuls of hops and finally the ale yeast.

To brew, you must go to a brewery. Breweries can be found in eastern Keldagrim and Port Phasmatys.

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