K-Ultra vs J-Ultra for light roast espresso, keep stuck between clicks [HiBREW H10 / 1Zpresso K-Ultra]
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Hey all, looking for opinions from people who've used either (or both) for light roasts.
Setup:
- HiBREW H10 (58mm, PID, 9 bar, no flow control)
- VST 18g basket, puck screen, WDT
- 1Zpresso K-Ultra (just got it)
- I only drink light roasts, straight espresso, and what I'm after is brightness and clarity, fruity acidity.
Background: I returned a Eureka Mignon Zero 55 because with some light roasts I was right at the chirp with nowhere to go. Still deciding on an electric grinder, so the K-Ultra is my main grinder for now and will be my travel/backup after.
The problem: with the K-Ultra's 20 micron steps I keep landing between two clicks. One click finer runs slow and tastes over-extracted, one click coarser runs fast and tastes under-extracted. Right now I'm compensating with dose (+/- 0.3g) and yield, which kind of works, but it's fiddly.
What I'm not sure about:
Is the K-Ultra actually brighter / more acidic than the J-Ultra for light roast espresso, or is the difference small? Everything I've found is basically one reviewer saying K is more acidic and J has more body and texture.
Would the J-Ultra's 8 micron steps make life much easier, and would I lose the clarity I'm after?
For those who stayed with the K-Ultra for espresso, how do you handle the between-clicks thing? Dose, yield, temp, something else?
If anyone has done a side by side with the same light roast, I'd really love to hear how they compared in the cup. Thanks!