Draft beer is any beer that is served from large casks or kegs. In the United States and much of the western world draft beer has become fairly synonymous with keg beer and is typically served in bars or restaurants from a keg rather than from a bottle or can.

The origin of the term draft beer comes from the Old English term "dragen," which meant "to carry." This was the source of a number of different terms used in the pouring and serving of beer including "draw," "drag," and "draught," which is still used in the United Kingdom. The term draught, or draft, came to be used not only for the process of serving the beer, but for the type of beer itself, drawn from a keg or cask and served to the customers.

Draft beer can deliver the ultimate brewery-fresh flavor experience to your glass Whether you are fervently dedicated to beer or an occasional beer drinker, your taste buds will automatically seek out beer at retail establishment that do a good job delivering great tasting beer. Great draft beer should be stored cold from brewery to bar , Brewery-fresh flavor  is maximized when beer is kept cold. Warmer temperatures cause beer to lose peak flavor more quickly. Tapped fresh with well rotated stock

 Draft beer is a product that most people do not have at home and can only be enjoyed when going out. It is also much cheaper per serving giving you the option to deliver better value to your customers.

Draft beer in a keg is unpasteurized, so any beer dispense system has to be designed with freshness in mind. Relying on "one-size-fits-all" gas mixtures delivered in tanks to push beer out of the keg is one method of serving, but an improperly dispensed gas mix can easily spoil a beer's flavor. It can also over-pressurize the brew, making it too foamy.

Alternatively, using beer pumps not only maintains the beer's taste, it also means an above-average yield can be poured from a keg. By reducing waste caused from over-pouring, beer pumps can provide customers with quality draft beer and a great presentation through the last of every keg.

Draft beer must be kept less than 42 degree from the tap all the way to the faucet. If the beer is not kept cold all the way to the faucet the quality of the beer will suffer greatly.

Glycol draft systems allow you to keep the beer cold even. Glycol systems have five major parts. One, a cooler large enough to store all of your kegs. Two, an insulated trunk line that the beer runs through after it leaves the storage cooler. Three, a power pack that refrigerates the trunk line. Four, the gas system that maintains the beer's natural carbonation and pushes the beer to the faucet. And five, the draft tower mounted proudly on the bar. 

 Glycol systems work perfectly and waste very little beer if they are designed, installed, maintained, and used properly. Unfortunately most glycol systems fall short in one of these four areas. 
If the system is not designed properly using all of the needed components it will waste beer and  bartenders' time by producing excessive foam.
All draft systems, especially those with long lines, must have preventative maintenance service at least every two weeks. At the very least the lines should be cleaned and the faucet should be removed and cleaned. The lines cleaner should also check the temperature of the beer that is in the lines and the temperature of the storage area during every cleaning. This will help weed out many problems before they become beer wasters