The American Chemical Society’s web series Reactions (see previously) explains why beers become skunked and how we can go about stopping it in their latest episode.
There’s nothing worse than reaching for a cold beer, taking that first sip and realizing your beer’s been skunked. Skunking is a chemical reaction that causes an awful, bitter taste. What can do to keep your brews from going bad? Quick answer: it’s all about light. Keep your beer in the dark, you won’t have to worry about skunking.