Freshly brewed beer was poured on an Oak bench. The official testers, usually 4 of them, actually sat in it for a couple of hours and if they could get up without the bench sticking to them the beer was not strong enough as the brewer did not use enough malt.
The tester jobs were very sought after as they got beer and food for free during their “ordeal”.
In many towns in those days stiff penalties were imposed on the brewer for not passing this test.
So, let’s put on our Lederhosen and test how all these watered down light beers fare nowadays.