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We tested the new Grind by Sync grinder at a busy speciality cafe for a month. The barista team pulled almost 4,000 espresso shots to share the pros and cons of the Mahlkönig grinder. We captured both the installation & calibration process and the feedback from behind the bar after the field test.
🔴 Disclaimer: We organised this field test in partnership with @MahlkoenigGrinders . The barista review wasn't influenced or edited by the brand. Learn more about Mahlkönig E80W GbS: https://www.mahlkoenig.com/de/products/e80w-grind-by-sync
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📍 Rebelbean Vlněna in Brno, Czechia 👉 https://europeancoffeetrip.com/cafe/rebelbeanvlnena-brno
📺 Watch our documentary about the AeroPress 👉 https://youtu.be/Wcboi8pNBs0 👍
-- WATCH MORE --
👉 All Iced Coffee Drinks Explained: https://youtu.be/MHKRQSZ_SFQ
👉 Making of Mahlkonig EK43 Grinder: https://youtu.be/zL0QH--jMfE
👉 Mahlkönig X64SD: The Right Single Dose Grinder For Our Studio?: https://youtu.be/hnzAWfpK4kE
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Camera: Marek Holášek & Tomáš Liszka
Edit: Marek Holášek
#mahlkoenig #coffeegrinder #review
Timestamps:
0:00 – We put a new Mahlkönig grinder through a real-world café test
0:31 – Meet Dennis, Head of Coffee at Rebelbean Roastery (Brno)
0:55 – Why Grind by Sync? The consistency problem at a high-volume café
1:52 – Unboxing the Mahlkönig E80W GbS | E65 vs E80 comparison
2:37 – The test: 300–400 coffees per day for 2 months
3:02 – App setup: connecting the Mahlkönig grinder via QR code
4:01 – Syncing Mahlkönig + La Marzocco apps
4:16 – Portafilter calibration & enabling Grind by Sync mode
5:39 – First shot: automatic burr adjustment in real time
6:14 – Dialing in the recipe — 10 shots to lock it in
7:14 – 2 months later: back to see the results
7:33 – 3,579 shots, 63.5 kg of coffee — what the data shows
8:09 – The hardest part: teaching baristas to trust the grinder
9:30 – Does Grind by Sync replace manual daily adjustments?
10:11 – Barista dashboard: shot accuracy, brew times, and remote monitoring
11:32 – Managing multiple cafés from one app
12:16 – Verdict: grind consistency, cleanliness & speed
12:31 – Who benefits most from this technology?
12:54 – Visit Rebelbean Vlněna in Brno ☕