To retain the taste the breweries intended, nitrogenous beers need to be dispensed with a stout type faucet, a 75% Nitrogen / 25% CO2 gas blend, and a dispense pressure of 38 lbs. Refer to our comprehensive keg coupler cross reference listing to make sure you have the appropriate keg coupler for the brand of stout beer you will be dispensing. Although most bars and restaurants store their stout beers at the 36-38° F temperature (which is critical for most non-pasteurized ale and lager type of draft beers), most breweries recommend their stout beers are served at a temperature of 42° F to get the best flavor attributes of their product.
Always verify with your local beer distributor the brewery recommended temperature and type of gas for the beer you intend to dispense.
The unique stout faucet has an integrated restrictor disc, through which the beer is forced. The restrictor disc breaks the nitrogen out of the beer, and creates the distinctive cascading head of stout beers. The restrictor disc must be left in place, and cleaned frequently to remove any buildup that may clog the tiny holes in the disc.
Additionally, stout beers are poured using the legendary two-part pour method.
The gas is a 75% Nitrogen / 25% CO2 gas blend and is commonly referred to as Guinness gas. This gas blend is inappropriate for ales and lagers type of draft beers, as it will change the CO2 content and thus the flavor of these beers. Purchase cylinders of mixed gas locally. We recommend inquiring with the store you are getting your kegs from for a local source of mixed gas, or look in your phone book under gas or welding supply stores. Request gas that is used with beverages.
While most 75% Nitrogen / 25% CO2 gas blend cylinders have a valve for use with a Nitrogen regulator (CGA-580 threads), there are some companies that supply 75% Nitrogen / 25% CO2 gas blend cylinders with a valve for use with a CO2 regulator (CGA-320 threads).
Find out from your supplier what kind of valve is on the cylinders they offer. If the valve on the cylinder is for Nitrogen and you already have a CO2 regulator, you can be easily adapt your CO2 regulator to a nitrogen valve cylinder by using a regulator adapter.