Beer is by far the most popular alcoholic drink in the world, and Germany is often considered the place with the best and biggest variety of beers, no matter whether lager or ale. If you have a friend who's a beer snob, they may ask you to go to a Biergarten more often than they'd like to admit. The Biergarten in question will probably have wursts, pretzels or spaetzles, along with a dozen different German brews. Granted, those brews are likely the most commercialised ones, and they probably aren't top-shelf beers as you might expect. While you should probably go to the Biergarten just to get a taste of the food, don't expect too much of the beer.