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Home Roast - no first crack! (infosec.pub)

submitted 1 week ago by Thedogdrinkscoffee@lemmy.ca to c/coffee@lemmy.world

33 comments fedilink hide all child comments

Been successfully roasting green beans at home for a few years now. Just discovered my first problem - no first crack!

Following a tried and true recipe on an SR540 my beans went from green to straw to various shades of brown but the usual popcorn sounds of first crack are notably absent. Just a few beans do it. Like, 5 pops instead of hundreds. 2nd crack happens as usual.

I'm still early into my 10 lbs bag, and it didn't happen with the first few roasts of the new bag.

Any ideas? Premature failure of the SR540? Bad beans? Stroke? Anyone else ever have this happen?

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[–] AMillionMonkeys@lemmy.world 2 points 1 week ago (1 children)

I have the same roaster and the same issue with most beans not audibly cracking. I could always hear the cracks when I was roasting with a popcorn maker. I think it has something to do with how slowly the SR540 roasts, at least at the default temperature settings. So now I go by time and eyeball it, then make notes on the coffee and adjust the next roast.

[–] Thedogdrinkscoffee@lemmy.ca 2 points 1 week ago* (last edited 1 week ago) (2 children)

It's been fine for years for me. I wonder if the machine's age is showing? Can you share your time, fan and heat settings?

Edit: recipe is

Fan - Heat-Time

9-3-until straw coloured ~ 3 min

7-5-until light brown ~ 2 mins

4-9 until roasted to desired.

Usually light just at the last of the first crack. 2 mins.

7-9 mins total time depending on roasts.

[–] ivanafterall@lemmy.world 2 points 1 week ago (1 children)

Wow, it only takes 9 minutes to roast your own beans!?

[–] Thedogdrinkscoffee@lemmy.ca 3 points 1 week ago (1 children)

Yes. Small batches in this model. 2x per week per person for a 2 cup a day habit.

[–] ivanafterall@lemmy.world 1 points 1 week ago

Definitely gotta try it.

[–] AMillionMonkeys@lemmy.world 1 points 1 week ago

The control knob on mine has gotten really sketchy so I don't adjust anything during the roast anymore - I just run it at heat 8 until I feel like dumping the beans. My times are similar to your: from 7 minutes up to 10 for some beans.