Science & Health
The science behind the cup — caffeine and how it works, extraction chemistry, acidity, decaffeination, and what research says about coffee and your health.
Caffeine Explained: How It Works and How Much Is in Your Cup
How caffeine actually works in the brain, how much of it lives in an espresso versus a mug of drip, why one friend can drink a double after dinner and sleep fine while another can't, and how the body processes it all.
Coffee Acidity: Taste, Chemistry, and Your Stomach
Why "acidity" means two completely different things in coffee — the bright, desirable flavor and the actual pH that worries sensitive stomachs — which acids do what, and how roast, origin, and brewing let you turn the dial up or down.
Coffee and Health: What the Research Actually Says
A careful tour of the evidence on coffee and health — the antioxidants and other bioactive compounds it delivers, the diseases moderate drinking is linked to lower risk of, the genuine risks and caveats, and why the way you brew it changes the answer.
Extraction Science: Why Coffee Tastes Sour or Bitter
The two numbers that explain almost every good and bad cup — extraction yield and strength — the 18–22% sweet spot the industry aims for, how to tell under-extraction from over-extraction by taste, and which knobs actually fix each one.
How Decaf Coffee Is Made
The three ways caffeine gets pulled out of a green bean — solvent, carbon dioxide, and the Swiss Water process — why decaf is never quite caffeine-free, whether the solvents are anything to worry about, and how much flavor survives the trip.