Kölsch and pilsner beer styles are often mistaken for one another, but differ in their origins and flavors. The difference is that Kölsch is an ale, whereas pilsner is a lager.
Kölsch's combination of brewing methods makes it an ale and lager hybrid. The beer's use of ale yeast gives it a fruity taste, with the lightness and drinkability of a pilsner.
Kölsch is smoother and less dry than a pilsner. That’s the key to understanding what makes Kölsch such a special beer, even if it plays second fiddle to the popular pilsner.