Beer Knowledge:
A lot of people have asked me the difference between beer and ale, or beer and lager, so I figure some TBers might benefit from some beerology too.
Ale and Lager are both types of beer. Pretty much the only difference is the strain of yeast used and the fermentation temperature. Ales use a top fermenting yeast which function best at higher temperatures and lagers use a bottom fermenting yeast which work at colder temperatures and therefore need a lot more time to ferment.
Stout, Pale, Brown, Belgian, Porter and Kolsch are all types of ales. Wheat beers like hefeweisens, weissbiers and belgian whites are also technically ales too.
Lagers include beer styles such as Helles, Bock, Marzen and Pilsner. Most macro brews (Miller, Coors, Bud, Asahi, Molsen) are lagers, albeit with adjuncts such as corn or rice added.
Lagers usually have a light, clean taste due to the lack of esters, (and other things like diacytyl etc) that don't get produced during the cold storing (lagering) process. Though I don't care for macro brews, I have to respect their ability since a light lager offers no room for off flavors to hide, and yet they crank out millions of gallons of identical tasting yellow fizzy water year in and year out.
Ales, on the other hand, usually have a fuller, more flavorful taste. They are also much easier to make for the average homebrewer.
