You don't need a cupping lab to evaluate your roasts. Here's a practical approach for home roasters that helps you figure out what's working and what needs adjustment.
Why Cup Your Own Roasts?
Every roast you do is an experiment. Without tasting systematically, you're guessing about whether your changes made things better or worse. Cupping gives you a repeatable way to compare roasts, track improvement, and notice patterns.
The Simple Version (5 Minutes)
If formal cupping feels like too much, start here:
- Grind 10g coarse (French press grind)
- Pour 150ml of 200F water directly on the grounds in a cup
- Wait 4 minutes, then break the crust with a spoon — smell it
- Skim the foam and grounds off the top
- Taste at 3 temperatures: hot (right away), warm (5 min), and cool (10 min)
Write down three things: what you smell, what you taste, and whether you'd roast it the same way again. That's it. You're cupping.
What to Look For
- Aroma — Smell the dry grounds, then the wet grounds after pouring water. What jumps out? Floral? Chocolate? Bread-like? Smoky?
- Acidity — Brightness, not sourness. Think lemon vs. vinegar. Good acidity makes coffee lively. Too much makes it sour. Too little makes it flat.
- Body — How heavy does it feel in your mouth? Tea-like? Syrupy? Creamy?
- Sweetness — Is it there? Caramel, brown sugar, fruit sweetness, honey?
- Aftertaste — Does the flavor linger pleasantly, or does it drop off (or turn bitter)?
- Defects — Baked (bread-like, flat), scorched (burnt tips), underdeveloped (grassy, sour), overdeveloped (ashy, bitter)
Using RoastSource's Rating System
The Ratings module uses the SCA 100-point protocol with predicted scores based on your bean's origin, processing method, and roast data. After a Quick Roast, rate it with a star rating and optional tasting notes. The app generates spider charts and tracks your scores over time.
You don't have to agree with the predicted score — it's a starting point. Your palate is the final word.
Getting Better at Tasting
- Cup the same coffee roasted at different levels side-by-side
- Taste with someone else — you'll notice different things
- Keep notes. "It tasted good" teaches you nothing a week later. "Blueberry, medium body, clean finish, slightly underdeveloped" teaches you everything.
How do you evaluate your roasts? Formal cupping, casual tasting, or something in between?