Roasting coffee is a balance of art and science. At Prescription Roasting, we’re always chasing that sweet spot — literally — where origin character, body, and natural sweetness shine.
Here's a quick breakdown of the three key phases of roasting, and how each one plays a role in developing sweetness in the cup.
Phase 1. The Drying Phase
Time: Beginning to ~300°F
What’s happening:
This phase removes moisture from the green coffee bean. Even though it’s called “drying,” there’s more going on — gentle heat starts warming up the bean from the inside out, setting the stage for chemical reactions to come.
Why it matters for sweetness:
A controlled, steady drying phase helps set up even development later. Rush it, and you risk an uneven roast. Take your time, and you’re laying the groundwork for balanced sugars down the line.
Phase 2. Maillard Phase
Time: ~300°F to first crack (~385°F)
What’s happening:
This is where the color changes and the magic starts — the Maillard reaction kicks in (think browning in bread crusts or seared steak), building complexity, aromatics, and body.
Why it matters for sweetness:
This is the flavor development zone. Slow and steady heat lets natural sugars caramelize and acids balance out. Managing this phase well is key to achieving that syrupy, sweet finish.
Phase 3. Development Phase
Time: First crack onward
What’s happening:
You’ll hear a pop — that’s first crack — the bean expands and releases pressure. From here, you're steering the roast toward the final flavor profile.
Why it matters for sweetness:
Here’s where we decide: do we highlight fruit? Go deeper and bring out chocolate? Development time after first crack determines how those sugars react — stop too early and it’s sour, go too long and you burn the sweetness off.
Final Thought
Getting natural sweetness from a coffee isn’t just about the origin — it’s about the roast that brings it to life.
Every roast we do is built around showcasing the bean’s natural sugars, acids, and structure — no gimmicks, just careful attention to timing, temperature, and feel.
Want to try it for yourself?
Check out Bluebird, Locals SZN, or Dawn Patrol — each roasted to hit that sweet spot.
