Phase III · Roasting and Freshness

Chapter 13
Why Coffee Is Roasted
Between green and roasted coffee, what did heat change?
Chapter 14
What Happens Inside the Roaster?
Drying, browning, gas formation, first crack — what is changing at each stage?
MVP
Chapter 15
Light, Medium, Dark
Why is roast development a spectrum rather than three boxes?
Chapter 16
Roast Changes Flavor
Which flavors come from origin, and which from the roast?
Chapter 17
Freshness and Degassing
Why does roast date matter, and why do beans need to rest?
Chapter 18
How to Store Coffee
Air, heat, light, moisture and freezing — what is the trade-off of each?

Phase project · Roast Comparator

Predict, then compare, three roast outcomes.