The Science of Coffee

Caffeine and Acidity Are Completely Different Things — Here's the Science Quick Answer Yes — low acid coffee has the same caffeine as regular coffee. Caffeine content and acidity are produced by completely different chemical...

The Real Difference Between Low Acid and Regular Coffee — It's All in the Roast Quick Answer Regular coffee averages pH 4.8–5.0 because flash roasting stops before quinic acids can convert into antioxidants. Low acid...

The Science of Coffee Antioxidants: Why Most Coffee Falls Short — And Which One Doesn't Quick Answer Coffee roasted beyond the flash-roast window has dramatically higher antioxidant activity because the same chemistry that converts bitter...

The Chemistry of Low Acid Coffee: A Step-by-Step Guide to How It Is Actually Made Quick Answer Low acid coffee is made through a patented roasting process that goes beyond pyrolysis — the stage where...

Greasy coffee beans signal burnt, flash-roasted coffee with oils extracted out of the bean. Learn why dry beans mean better flavor, lower acid, and more antioxidants.

Shopping for non-oily coffee beans at Costco? Most Costco coffee brands are flash-roasted and oily. Learn what oily beans mean and how to find a genuinely dry low-acid option.

Starbucks and Peet's coffee beans are notoriously oily — a sign of flash roasting that extracts oils from the bean and produces high-acid coffee. Here is what it means and what to drink instead.

Oily espresso beans clog super automatic machines and signal flash-roasted, high-acid coffee. Here are the best non-oily espresso beans and why Puroast leads the category.

Reddit coffee communities often celebrate oily beans as a sign of quality. The science says otherwise. Here is what flash roasting actually does and why dry beans are superior.