My breakthrough came from hearing the coffee beans talk

I was roasting some Costa Rican beans on a Saturday morning with my popcorn maker. For years, I followed a strict time chart I found online. But last week, I decided to ignore the clock and just listen. The first crack sounded like popcorn popping, and I noted the time. Then, there was a quiet moment that lasted about a minute. When the second crack began, a softer snapping noise, I knew it was time to cool the beans. This method gave me a perfect medium roast, something I had never achieved before. Now, I always roast by ear, and my coffee has never been better. It's a small change, but it changed everything.

3 comments

3 Comments

the_blair1mo agoMost Upvoted

That's really cool you figured out out by sound. I've always wondered about that quiet minute between the first and second crack. How do you know for sure when it's actually starting the second crack and not just a few late first cracks popping? Do different beans change that timing much?

nathan_jackson161mo ago

Second crack sounds sharper and faster, like rice krispies, while first crack is slower pops. That quiet period isn't always a minute, @the_blair, it changes with how fast you're roasting. Different beans shift the timing a lot, like dense beans taking longer between cracks. You learn to hear the rhythm change for sure second crack.

rosew371mo ago

Have you thought about how your roasting machine's noise might cover up the early second crack sounds? I've found that on louder machines, I rely more on the rhythm change nathan mentioned, but it's trickier. Once you learn to filter out the machine hum, the second crack pops become distinct almost every time.