FG1 Coffee Lab
January 2026 Roast
Two different beans in this roasting session on Saturday, January 3, 2026…
R1 - Costa Rica Zarcero Monte Brisas Danto
The first batch was a continuation of December’s roast. I am sad this is my last big batch of this bean as it has been fantastic as espresso or an americano. It has been very forgiving as well; always smooth, never bitter regardless of the extraction.
R2 - Guatemala Xinabajul Aler Villatoro
Back to Guatemala for the second roast of the session and one I have not had since November. As mentioned last month, historically I’ve been roasting Guatemala beans to Full City+ (215-220°C) or on an occasion when requested to Vienna (220-225°C). Roast Level reference. This month I wanted to back off slightly and try a Full City (212.4°C) roast after reading these cupping notes, “Evaluated as espresso, my Full City roast yielded a velvety textured shot, cocoa-toned, bean-to-bar dark chocolate, and a rindy citrus accent brought a lively side to the bittersweetness.”.
Sweet Maria’s blurb:
Ample sweetness, dark brown sugar, Dulce de Leche, caramel popcorn, and dried apple accent. Dark roasts boast sturdy base bittersweetness and creamy mouthfeel. City+ to Full City+. Good for espresso.
Full details from Sweet Maria’s
December 2025 Roast
Costa Rica Zarcero Monte Brisas Danto
I usually roast Guatemala beans to a Full City level, but this month I’m switching things up with a Costa Rica bean and experimenting with a lighter City roast. Here’s how Sweet Maria’s describes it:
Well-balanced with a nuanced side that adds interest to the cup. Raw sugar sweetness, brisk acidity (light roasts), hints of apple, spiced chocolate, cocoa nibs, and toffee almond. City to Full City+. Good for espresso.
Full details from Sweet Maria’s
Reference: Roast Levels
These should not be considered absolute as there are variables (like washed vs natural beans) to take into account when roasting, but certainly a good reference.
| Roast Level | Approx. IBTS (°C) | Typical Characteristics |
|---|---|---|
| Cinnamon / Very Light | 190–198 | Grassy, bready, sour |
| City (Light) | 198–205 | Bright acidity, origin clarity |
| City+ (Light–Medium) | 205–210 | Balanced acidity & sweetness |
| Full City (Medium) | 210–215 | Caramelized sugars, reduced acidity |
| Full City+ (Medium–Dark) | 215–220 | Chocolatey, bittersweet; near 2C |
| Vienna (Dark) | 220–225 | Roast-forward, smoky notes |
| French (Very Dark) | 225–235 | Heavy smoke, oils visible |
| Italian (Extremely Dark) | 235+ | Carbonized, minimal origin character |