The bean density stat that messed with my pour over

I saw a roaster in Portland post that light roasts are actually denser than dark roasts, so they weigh more per scoop. That blew my mind because I always assumed the opposite, figured dark beans were just heavier somehow. I weighed a cup of each at home and the light roast was like 12% heavier, which means my scoop routine was giving me way less caffeine for the same amount of coffee. Now I use a scale for every batch, but I still catch myself eyeballing it out of habit. Has anyone else been thrown off by weight versus volume with different roast levels?

2 comments

2 Comments

taylor_mitchell801d ago

Dark roasts are lighter per scoop because they've lost mass in the roast, so you're actually getting fewer coffee solids with the same volume. Caffeine content barely changes between roast levels, but the real hit is flavor, dark beans are more porous so they extract faster and end up overbrewed with a scoop routine. The density thing matters most if you're chasing consistency, and using a scale fixes that regardless of which side of the argument you land on.

nathanb711d ago

Whoa, hold on, I gotta push back on that a little. Light roasts are denser, sure, but that’s because they shrink and lose water weight during roasting, so a dark bean is actually lighter and puffier, not heavier. If you’re measuring by scoop, you’re getting more bean mass with light, but the caffeine difference is way smaller than people think, so it’s not like you’re losing a huge buzz.