Pietro by Fiorenzato - vertical flat-burr manual grinders - Page 6

Grinders are one of the keys to exceptional espresso. Discuss them here.
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#51: Post by jesse »

is there seriously no way to embed instagram on HB?

Many of you have noticed these grinders on my shelf and have been asking my thoughts on @pietrogrinders .

Well, here goes.

Back in September, I flew out to Treviso, Italy. I had been invited to check out what was to be an exciting project: the first ever marketed flat burr hand grinder.

Of course, this piqued my interest.

Over the course of a few days, and by communication since (including a few visits from employees there to my studio in Porto), I have been consulting on the project.

My main contributions are the pro brewing burr set and a base for stability which grinding to improve ergonomics.

My goal with the burrset was the produce inarhuably the most narrow distribution of any available handgrinder. Using their Mastersizer 3000, I took innumerable analyses of iterations of these burrs as well as other well known hand grinders.

Without going into too much, I can say without a doubt these burrs I assisted heavily in creating, both in geometry and in going after specific curves, are the most unimodal on the market.

We are still finalizing a base to my spec, but once ready, it will be an absolute treat.

58mm blind burr manual grinder by Pietro and myself.

I'm ready for you all to get your hands on this! I'll have a review ready (don't worry, I'll still be critical as I didn't design this from the ground up) once we finalize the base.

Oh, did I mention they liked my input enough they agreed to pay me a small portion of each pro brewing set sold? Pretty cool and super helpful for the channel!

Follow Pietro's IG and stay tuned for more information.

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#52: Post by malling »

Anything that can make this the best handgrinder for light roast is welcome. I have patiently waited and this could well turn out to change the handgrinder scene completely. Conical are fine but it dos have its limitations for those specific lighter roast and I always found all conical hand grinders to lack something when put up against my flat burr electric grinders this could well change that.

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#53: Post by babola »

Handling of it while grinding is awkward, as reported by many who tried it so far. They will need a wider base to rest on the bench top or a fixed attachment like some kitchen grinders in the past used to have.
My guess is the novelty will wear off soon and you'll be back to your old conical hand grinder, time will tell.

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#54: Post by malling replying to babola »

They should be working on that as well

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#55: Post by malling »

Lance Video is up, it's good he mentioned his involvement in the design of the Pro brewburrs, I also like he say he won't ever take it up in comparison because of said involvement. I do like the part of the video where he go through the whole process of the design of the burr properly the most interesting bit.

Obviously his judgment should be taken with some serious precaution, but it's interesting none the less of trying to land a handgrinder with a cup profile close to the 64 MP

Also demonstration of the stand.

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#56: Post by Cuprajake »

It's not the cheapest of hand grinders esp when comparing it to the other hand grinder

It's coming in at €424 shipped while the 1z he compared against is out of stock but $199

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#57: Post by malling replying to Cuprajake »

It's €413 at The God Shot Delivered to pick up point you also get a lotus pack if using the Lancehedrick code if you have said package in your basket.

It's not the cheapest but it's not much more then Mazzer Omega, there also other handgriner at €400. But this is the only one with a profile of unimodal burrs and with flat burrs. Also getting into the burrs are like the best I ever seen in a handgrinder it's a 1.5kg beast I'll say it's well worth its premium given it delivers in the cup. If it level or even beat Ode with MP then this will be the benchmark for all hand grinders forward.

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#58: Post by Jonk »

So little discussion about this grinder. I had the chance to try one with the pro brew burrs yesterday for a few hours. Some impressions:

It was not difficult to grind for filter at all. This was without the base and yes, you kind of need to lean down on the top while using it for stabilisation. There was an unusual feel and sound to the grinding action, kind of similar to a conical handgrinder if you crank as slowly as you possibly can (to the point where it's both difficult and painful).. but with the Pietro cranking was easy even with very lightly roasted and dense peaberrys. I didn't time the grinding, but I'm pretty sure it's slower than K-Max, C40 and the likes.

I preferred using it on the edge of the table so I didn't have to worry about hitting it with the crank hand. There were mini stalls during every grind, as seen in several videos, but what you can't see is that it doesn't feel bad. Stalling with a conical hand grinder is quite annoying, this felt okay. Build quality seems good.

We cupped and brewed V60 side by side with a Fellow Ode w/ SSP unimodal v1 (now sold as MP v1). Not blind, still the differences were slight. If someone would claim that the Pietro is more unimodal, I wouldn't have a hard time believing it. Preference was an even split between both, depending on the beans used. Perhaps there was a slight sharpness from the Pietro, but it didn't exhibit the mild astringency I tend to get from SSP MP v1.

If you have one I wouldn't see the need to own the other. The Pietro is big compared to handgrinders, but very slim compared to benchtop manual grinders and it performs like an electric grinder. I'm impressed.

Grinding a few grams for espresso could be okay with the pro brew burrs. A full dose just felt silly - it's not a fun time :!: The catch cup is a little bit awkward to pour from, but works fine. According to the owner you need to RDT to avoid static, so that's what we did.

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#59: Post by hobomotorhome »

I've been using the Pietro for a few weeks. I have both sets of burrs but only using the pro burrs for now.
I have put a few pounds of junk coffee through it but wouldn't call the burrs seasoned yet. I am on my own and only brew a couple cups a day for myself so I haven't put much coffee through it.

My palate is not very refined however I will say I have been experiencing brighter, crisper coffee than my Kinu M47.
I roast my own in a Hive roaster and lately been trying African coffees hot and fast, ~6 minutes to 205, ~18% development.

I don't find it hard to grind with at all, its not quite as fast the Kinu, especially at an espresso setting, but the stalls are not as jarring.
I am a little person so I have step stools everywhere, and I grind with one foot on a stool and the grinder on my knee, same as my Kinu, and it's no trouble grinding.

I did try a couple espresso brews and they ran a bit fast so I need more dial in tries but the taste wasn't bad.

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#60: Post by ira »

I played with the Pietro a bit at SCA and was able to use it both alone and with the prototype stand, the stand is a game changer. Without it, it's weird as the only obvious place to hold it by is the catch cup which pops off as soon as you start grinding so you first try to grind by holding it by the grind chamber right in line with the handle so you have no leverage to resist when the burrs catch a bean, when that doesn't work, you end up trying to grind at the edge of a table so the handle is off the edge. The edge of a table works, but I'd recommend some anti-slip mat under it as I found it moved around a bit. So while is is a hand grinder, I consider it more a HG-1 like piece than competition for any of the traditional conical hand grinders. Once you put it in the base, it's stable, raised up enough you don't worry about hitting the table and just grind away. But in the prototype base they made the catch cup fit tightly so to get the coffee out you had to remove the whole grinder and catch cup out the top before you could remove the catch cup to get the coffee. Since the stand and grinder as a unit are as stable without the catch cup installed as with it installed there is no reason to have the catch cup easily come out the bottom so the grinder and base remain assembled as if they were one piece. I tried to explain this to the Pietro reps from Italy but it's unclear if I was able to get my point across. I guess we'll find out then the base finally ships. It's also like an HG-1 in that it's rather unreasonably large and heavy to be considered a travel grinder. Easier than an HG-1 as it doesn't need the base, but you will want the base. If they changed it so the body of the grinder extended down to the bottom of the catch cup so one could grab that part of the grinder it would make a lot more sense using it without the base.

No judgement on grind quality. And it it wasn't so expensive I might have brought one home just to have and admire. Somehow it would be nice sitting next to the Fixie.