Selecting the best Rate of Rise when roasting

With Cropster’s latest update to Roasting Intelligence, the software solution provider says it answers a question many roasters ask: “what is the perfect Rate of Rise (RoR)?”

Cropster Roasing Intelligence aims to deliver the tools roasters need to develop a “perfect” RoR for a particular coffee on their setup. Because coffees and roast machines have infinite variety, it says delivering an even better starting point will make people’s “perfect” RoR even easier to achieve.

Cropster now offers three RoR choices to help roasters optimise the presentation of their roasting setup: Recommended, Sensitive, and Noise smoothing. These options give roasters the ability to choose the best RoR for their needs and roasting environment.

“The new RoR system in Cropster allows roasters to customize the ‘noise’ in their curves to strike the best balance between noise and data quality. Separating the ‘time expression’ from the RoR Interval may help some users avoid confusion,” says roasting consultant Scott Rao.

These settings define the speed – responsiveness – and, therefore, the smoothing – the faster, the less filtered, the spikier potentially, – for roasters.

“For those of us that like a slightly smoother RoR feedback loop it is great having a choice on how we want to see it and not being influenced to overcorrect due to too fast a feedback loop,” says Anne Cooper.

In most cases, people will want to go with the recommended setting. This setting is designed for most roast machine and probe setups and delivers the best balance between presentation, timing, and smoothness of curve to help people roast.

The sensitive setting has been designed for roasting environments with little to no noise (i.e. minimal interference). The result presents a nearly real-time and extremely detailed RoR information with minimal smoothing, which can remove detail.

Noise smoothing
The noise smoothing setting has been designed to help with noisy setups. There can be many reasons for a noisy curve. That's why Cropster provides manuals and expert advice to help roasters achieve an optimal setup from their equipment. Basically, this setting is here to help people get roasting and get the most out of their setup.

“I like that the data is more current during the roast. The delay from averaging has been lessened which means you have more accurate and timely data. I also like that you can do some smoothing on your own accord,” says Rob Hoos.

Cropster says it receives many questions about RoR. “As technologists who love coffee, we know a lot about it. We also know that our expertise on the tech side will only help roasters get so far. They also need deep coffee expertise. As a result, we reached out to some of the world’s leading coffee roasting experts; Anne Cooper, Rob Hoos, and Scott Rao; to help us answer some key questions about Rate of Rise and how roasters can use Cropster to get the most from this very important metric,” it says.

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Image: Cropster. A solid, almost noise free roast machine setup with Recommended (Green) vs. Sensitive (Purple) RoR settings in Cropster.

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