"Our species, the homo sapiens of all the forefathers, learnt fermentation way ahead of learning how to till land and sow seeds."
Some anthropologists even believe that we settled down only to better ferment and brew our drinks, since a nomadic life and shortage of readily available fruits and grains were not conducive to a brewing culture that needed settling down.
Beer is the oldest and the most natural alcoholic beverage known to humans, most probably an accidental discovery of how fermented fruits produced alcohol and tasted different and made our ancestors jubilant.
Beer as we know today is a fermented and carbonated alcoholic beverage and is much lighter and contains much less congeners than the ancient beers that were considered food, with much thicker consistency and less alcohol and more of the original fruit or grain used to make it.
Beer back then was mostly nutritional, preserved and was consumed by old and young alike, and since water was mostly contaminated, it was a source of fluid too.
Coming back to modern beer, Beer is so integrated into the national cultures of so many European countries, that, we mostly think of drinking beer the way it's traditionally drank. That is, a beer or an ale with a frothy head, in a mug or pilsner glass, or at the most as a chaser for some strong liquor or with a shot of whisky dropped into it.
But, beer having a bitter sweet taste with a complex aroma on a floral background often is a good mixer and master bartenders can take a beer and turn it into a fabulous drink that might be paired with a citrus, or fruit.
Or blend it with Margarita Mix or Top up a Margarita with Mexican Beer to make your Lagerita, and enjoy.