Is Your Roast’s Line Too Light? Decoding the Mystery of Medium Roasts
There's something brewing in your kitchen—literally. You’ve taken the plunge into home roasting, chasing that perfect cup of coffee, but now you’re staring at a batch of beans that look like they’ve been through a storm. The line is lighter than expected, the outside darkens faster than a summer storm, and you’re left wondering: is this a sign of underdevelopment, or just the natural rhythm of the roast? Let’s cut through the confusion. When you roast coffee, the “line” refers to the point where the bean’s outer shell cracks open, signaling the start of the first crack. This is the…










