I’ve started seasoning the burrs in the last couple of days by using it to grind for our daily pot of coffee (which this grinder also does quite well).
I’ve owned the X-Pro (pictures on left) for about a year and a half now, and I’ve absolutely loved it. It’s one of the best “all around” hand grinders on the market, and makes excellent pourover as well as espresso, with the heptagonal 40mm conical burrs producing a flavor profile that tends towards a pleasant acidity that works very, very well for the light to medium roasts that I like to brew.
I’ve liked the X-Pro so well, that I started wanting to also get another 1Zpresso (pronounced “EZ-presso”; a Chinese language play on words; these grinders are made in Taiwan).
So when their top of the line espresso-focused grinder (the J-Ultra) went on sale for 20% off on Amazon, and I realized that I also had some credit card points I could use along with a gift card I’d gotten for my birthday, I couldn’t pass it up.
The J-Ultra is similar to the X-Pro, but with a couple of differences - It’s a slightly larger burr at 48mm, and has a titanium nitride coating, where the X is just bare stainless. And it’s more narrowly focused on producing grinds for espresso, so the output is more unimodal, and it produces more fines. Which, while that’s not ideal for drip, it’s good and necessary for espresso. And with the larger burrs, grinding effort is a bit less than with the X.
As I was saying, I’ve yet to grind for espresso with it, but the coffee produced with it, brewed through the MoccaMaster, has been very good. I’ll be using it to grind for some shots on the F58 tomorrow! Will update here.
Here’s an exhaustive written review by CoffeeGeek:
https://coffeegeek.com/reviews/firstlooks/1zpresso-j-ultra-manual-grinder-first-look/
And a good video review by the Coffee Chronicler: