However, the first beers were not comparable with today's beer. While beer was still made from a wide variety of ingredients back then - especially in the Middle Ages - nowadays it is actually brewed to a large extent from hops. Another difference is made by the now bottom-fermented brewing method.
If we now look at the development chronologically and according to its importance, we can probably say that the discovery of the "Pilsner Brauart" of bottom-fermented beer created a major breakthrough. This refers to bottom-fermented beer with an increased hop content, correspondingly also a very strong hop aroma and only a small proportion of original wort. This beer is often known as lager or export beer. It takes its name, of course, from its place of origin: The Bohemian city of Pilsen.
In addition, there are now an enormous number of other varieties, here is just a minimal overview: