# 237 | How electrical currents can read coffee TDS and Roast Level

Page: https://stenobird.com/podcast/coffee-roaster-warm-up-sessions-4776439/237-how-electrical-currents-can-read-coffee-tds-and-roast-level
Text version: https://stenobird.com/podcast/coffee-roaster-warm-up-sessions-4776439/237-how-electrical-currents-can-read-coffee-tds-and-roast-level.md
Podcast: [Coffee Roaster Warm Up Sessions](https://stenobird.com/podcast/coffee-roaster-warm-up-sessions-4776439)
Published: 2026-05-03T13:30:00+00:00
Episode link: https://podcasters.spotify.com/pod/show/mirror-coffee-roasters/episodes/237--How-electrical-currents-can-read-coffee-TDS-and-Roast-Level-e3iqanc
Audio file: https://anchor.fm/s/5928842c/podcast/play/119400620/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-4-3%2F423353707-44100-2-0a86f1cf5e595.mp3
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JSON: https://stenobird.com/v1/public/podcasts/coffee-roaster-warm-up-sessions-4776439/episodes/237-how-electrical-currents-can-read-coffee-tds-and-roast-level
Duration seconds: 1427

## Resource

About a week ago, a new paper was published on the use of cyclical voltammetry to read a coffee's TDS and roast level. It has the potential to make a huge difference in how roasters and coffee drinkers exchange information, achieve consistency, and standardize quality. Read the full paper here: https://www.nature.com/articles/s41467-026-71526-5Pick up our coffee here: https://mirrorcoffeeroasters.com/Find us on Instagram: https://www.instagram.com/mirrorcoffeeroasters/ Mirror Coffee Roasters is a specialty coffee roaster located in Bellingham, WA

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