A guy at the coffee shop in Boise said he could tell the roast date by the bloom

I was at a place called Slow By last week and a man next to me watched me pour. He pointed at the grounds and said, 'See that weak bloom? That's at least three weeks off roast.' I've been checking dates on bags ever since, but is that a real thing or was he just showing off?

2 comments

2 Comments

angelab6220d ago

Bloom can tell you some things, but not an exact date. It shows how much gas is left in the beans. A super active bloom often means a very fresh roast. But a weak bloom could just mean the beans were pre-ground, or your water wasn't hot enough. That guy was probably half right, but also making a guess to sound smart.

zara_miller19d ago

Oh yeah, @angelab62, I read that exact thing in a coffee book last week!