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The original was posted on /r/beer by /u/Mister_Barman on 2025-08-06 16:53:44+00:00.

I love a proper British ale. As I sit in a local pub in the sun drinking a gorgeously amber pint from a nearby brewery, I wonder. I look at the website of the company that made this beautiful drink, and see that they make 10 different styles, each different in profile and ABV, sometimes by a single decimal.

How do brewers, especially local ones, maintain such consistency? Is it just using the exact same quantity of different ingredients each time, or meticulous attention to detail, or something else? For a process so sensitive to temperature, impurities, slight bumps, it seems unbelievable how the beers come out exactly the same, every time.

Bonus questions; how do macro-lager brewers do it too; is there a different method? And whisky makers, how do they make every bottle exactly right?