The delicate pilsner walks a fine line. The refreshing beer is highly carbonated with floral aromas and a crisp, bitter finish. You'll know a pilsner when you see it, thanks to the golden body and thick, white head. But to taste its best, pilsner beer must be fresh. It only takes one sip to know if you've got a stale pilsner in your glass. The classic pilsner comes from the Czech Republic, though Germany has their own style that is slightly lighter in heft and color.