Beer 101: The Beer Words You Keep Confusing, Explained
Ale vs lager is about yeast, not color. IPA is a kind of ale. 'Skunked' is light damage, not age. Here's the simple science behind every word on the beer menu, broken down to four levers: yeast, hops, heat, and light.
What is it?
Beer 101 is a plain-English guide to the words on every beer menu — ale, lager, IPA, draft, stout, 'skunked' — and the simple science behind them. It breaks the whole confusing vocabulary down to four hidden levers: the yeast, the hops, the heat, and the light.
Why is it trending?
Almost everyone drinks or orders beer, yet the vocabulary stays confusing. People constantly search 'ale vs lager,' 'what is an IPA,' and 'why does beer taste skunky.' This guide answers all of them at once with the mechanism, not just labels.
Key Things to Know
It's all about the yeast
Ale vs lager is decided by the yeast and fermentation temperature, not the color. Ales ferment warm (15-25C) and taste fruity; lagers ferment cold (8-13C) and taste crisp and clean.
IPA is a kind of ale
Ale and lager are the two families, set by the yeast. IPA, stout and pilsner are styles. An IPA isn't a third type, it's just a heavily-hopped ale.
Hops do three jobs
Hops add bitterness, aroma, and act as a natural preservative. That's why IPAs are bitter, and why hoppy beers taste best fresh, before the aroma oils fade.
'Skunked' is light, not age
Light reacts with hop compounds to form a molecule almost identical to skunk spray. Brown bottles block it; clear and green ones don't. Cans and kegs are safest.
Dark doesn't mean strong
Color comes from roasted malt. Guinness is dark but only about 4.2% and ~210 calories a pint, lighter than many pale lagers.
Test your beer IQ — 13 quick questions
13 questions to test your understanding