Greenman's ale(m)

Mature Greenman's Ale is an extremely valuable and sought after brew that is the result of player made ale brewing and requires a Cooking level of 29. It is only created through Brewing, a subset of the Cooking skill. When consumed, this stat enhancing beer provides a temporary boost to the player's Herblore level by +2, as opposed the +1 boost provided by its regular strength counterpart. It is the stronger, or 'mature' version of a Greenman's Ale. 4-dose kegs of this brew can be purchased from the Grand Exchange, but it should be noted that these kegs are very expensive.

Effects

 * Increases Herblore by 2 levels for the standard duration of stat restoration (about 60 seconds at +2, followed by 60 seconds at +1).
 * Heals 10 life points.
 * Lowers Attack and Strength by 2 levels.

The full recipe for standard Greenman's ale is as follows ( in the order given ):
 * 1) 2 Buckets of Water
 * 2) 2 Barley Malt.
 * 3) (optional) 1 "The Stuff," to increase chance of maturity.
 * 4) 4 Clean harralander
 * 5) 1 Ale Yeast
 * 6) Wait two to five days
 * 7) Collect the completed ale using eight Beer Glasses or two Calquat keg.

Maturing
During the brewing process, there is random chance that the batch of ale will turn out mature. This happens during the brewing process, not after. Leaving a normal ale in the vat after it has fully set will not make it turn mature, nor will it go bad. The chance of brewing a mature ale can be increased by 50% by adding a package of the stuff to the brewing vat. Chance of maturity is also affected by a player's Cooking level, but not by all that much; higher Cooking level mostly results in a lower chance of the ale going bad. See the Brewing guide in the Cooking skill guide.

Note: "The Stuff" is acquired from Honest Jimmy on Mos'Le Harmless for the price of 5 Pieces of Eight, which are rewarded to the player for playing the activity Trouble Brewing. Players receive Pieces of Eight even if they lose the game, and usually receive around 80-200 pieces of eight per game (ranging from both losing to winning). Players can easily gain a large enough of a stack of Pieces of Eight from 2-3 rounds of Trouble brewing to last through several months of brewing ales non-stop. On a related note, the shop stock of "The Stuff" is 10 per day.