The Brew Blog

Bitterness and astringency are not the same thing — and fixing the wrong one makes it worse. Here's what each one is, what causes it, and how to fix it.

Most of what you experience as coffee flavor is actually aroma. Here's the chemistry behind coffee fragrance and how to access it deliberately.

Coffee cupping is the standardized tasting procedure the specialty industry uses to evaluate quality. Here's the complete SCA protocol explained step by step.

Running a coffee cupping at home is simpler than the professional protocol suggests. Here's everything you need to do it well with basic equipment.

Roast level determines whether you taste the coffee or the roast. Here's how light, medium, and dark roasting mask or reveal what's actually in the bean.

Same bag, same grinder, different cup — here's why coffee tastes different every day and which variables to control to get consistent results.