Earlier quoted context omitted.
Beer is incredibly difficult to keep shelf-stable. International beers, unless very specific efforts are taken, will taste off. I heard a story that Austrian beer enthusiasts just assumed American beers tasted "skunky" because that's how they tasted after importing them. Time, temperature, and light are enemies. Anheuser-Busch has a dozen breweries across the US. I'm not a fan of hops, but the PNW grows 96% of hops i…
The skunky odor/flavor comes from light exposure to hops and it’s easily prevented with dark bottles or cans. Other herbs work well as preservatives and don’t get skunky at all. Beer can be shelf stable basically indefinitely if well kept, and often ages very well.
Bottles in general are not as good as cans at keeping beer fresh.