Chestnut G1: The Hand Grinder That Changed What People Expect for the Price

When the 1Zpresso Chestnut G1 came out, it shook up the hand grinder market in a way that hadn't happened in years. Here was a hand grinder under $50 that used quality stainless steel burrs, had adjustable grind settings, and produced results that outperformed plastic blade grinders twice its price. If you're wondering whether the G1 is worth your money or what it's actually like to use, I'll tell you everything you need to know.

This article covers the G1's design, burr quality, grind settings, how it performs for different brew methods, who it's best suited for, and how it compares to similar grinders in its price range.

What Is the Chestnut G1

The 1Zpresso Chestnut G1 is a compact manual burr grinder designed for everyday home brewing. It's part of 1Zpresso's entry-level Chestnut line, and it targets home coffee drinkers who want better coffee than pre-ground provides but aren't ready to commit to an electric burr grinder.

The G1 uses 38mm stainless steel conical burrs. At this price point, that's genuinely impressive. Many competing hand grinders in the sub-$50 range use smaller ceramic burrs or steel burrs with less precise machining. The 38mm size processes a usable dose (15 to 20 grams) in a reasonable amount of time.

The body is mostly stainless steel with a plastic top section. It fits comfortably in one hand while the other turns the handle. Total height when assembled is around 22cm, and it fits in a jacket pocket or small bag without trouble.

Capacity in the bean hopper is about 25 grams of whole beans, which is enough for two cups or one generous single cup. The catch jar holds the grounds at the bottom and screws on and off easily.

Grind Settings and Adjustment

The G1 uses a numbered external adjustment ring with 15 clicks per rotation. That number matters because it tells you how easy it is to get back to a setting you know works.

Most hand grinders at this price use an internal adjustment mechanism where you unscrew the bottom, count clicks on a hidden collar, and reassemble. External adjustment is much more practical. You can change grind size between cups without any disassembly.

For drip coffee, you'll typically land somewhere around settings 8 to 12. French press works well around 12 to 15. Espresso is a different story, and I'll address that specifically below.

The clicks are distinct and easy to count. You won't accidentally skip two clicks while trying to move one. That kind of tactile precision is something you appreciate after using grinders where the adjustment is vague or slippy.

Brew Method Performance

Drip and Pour-Over

This is where the G1 performs best. For V60, Chemex, or a basic drip setup, the G1 produces a consistent medium grind that makes clean, well-extracted coffee. I've made side-by-side cups comparing G1-ground coffee to a $30 blade grinder, and the difference is real. The blade grinder produces muddy, over-extracted cups because of the inconsistent particle distribution. The G1 brews cleanly.

At a medium drip setting, grinding 20 grams of coffee takes about 45 to 60 seconds of hand cranking. That's not fast, but it's not exhausting either. The resistance is smooth and consistent.

French Press

The coarser settings on the G1 produce a grind suitable for French press. The particle consistency is good enough that you get a full immersion extraction without an excessive amount of fines at the bottom of your cup.

AeroPress

The G1 handles AeroPress grind sizes well. AeroPress is flexible and works across a wide range of grind sizes depending on your recipe, so there's plenty of room to experiment.

Espresso

The G1 is not designed for espresso, and trying to use it for espresso reveals the limits of the burr set. The finest settings produce a grind that's close to espresso range, but the consistency isn't tight enough for reliable shot pulling. Espresso machines demand precise particle size distribution to avoid channeling and uneven extraction. The G1 can produce a reasonable stovetop moka pot grind, but for a pump espresso machine you'd be frustrated.

If espresso is your primary goal, this isn't the right tool. Check out the best coffee grinder options for dedicated espresso setups.

Build Quality and Durability

For under $50, the G1 is well built. The stainless steel body feels solid, the handle doesn't wobble, and the adjustment ring stays where you put it.

The weakest point is the plastic top section around the bean hopper. It's functional but feels less premium than the rest of the unit. Some users report small hairline cracks forming in the plastic after extended use, though this seems to be an edge case rather than a widespread issue.

The bearings in the G1 are noticeably smoother than what you get on similarly priced grinders. The Hario Mini and Porlex Mini, which have been popular entry-level hand grinders for years, use ceramic burrs and ceramic bearings that feel grittier. The G1's steel bearings create less resistance and a smoother cranking motion.

Cleaning and Maintenance

The G1 disassembles with a simple counterclockwise twist of the adjustment ring and catch jar. Access to the burrs for brushing out retained grounds is straightforward.

Coffee oils build up on burrs over time and can make grounds clump or impart stale flavors. Brushing out the burrs every week with a stiff pastry brush takes about two minutes. A deeper clean every month or so, using Grindz tablets or a dry towel on the burrs, keeps the unit fresh.

One useful habit: grind a small amount of rice through the grinder every few weeks to pull out residual oils before a cleaning.

How It Compares to the Competition

The most direct competitors are the Hario Mini Plus (around $35), the Porlex Mini (around $45), and the Timemore Chestnut C2 (around $50). Yes, the Timemore Chestnut and the 1Zpresso Chestnut share a name, which creates occasional confusion. They're different companies and different products.

Against the Hario Mini and Porlex Mini, the G1 wins on grind consistency and the external adjustment system. Both Hario and Porlex use internal adjustment that requires disassembly.

Against the Timemore C2, the comparison is closer. The C2 uses similar-sized burrs and also has external adjustment. Most grind comparison tests show the two performing very similarly. The 1Zpresso G1 is slightly cheaper in most markets.

Both are solid choices. If you can find either at a good price, you won't be disappointed. My roundup of top coffee grinders includes more comparisons if you want to look at the full range of options.

FAQ

Can the Chestnut G1 grind for espresso?

Not reliably. The finest settings get close to espresso grind range, but the particle consistency is too variable for a pump espresso machine. It works reasonably well for moka pot.

How long does it take to grind 20 grams of coffee?

At most drip settings, expect 45 to 90 seconds depending on the roast level and the grind size. Lighter roasts and finer settings take longer.

Is the Chestnut G1 good for travel?

Yes. It's compact, lightweight, fits in a bag, and requires no electricity. It's one of the better travel coffee grinders in its price range.

How do I clean the Chestnut G1?

Unscrew the catch jar and adjustment ring, remove the burr assembly, and brush out the chamber and burrs with a stiff brush. Full disassembly every month or so with a cloth wipe of the burrs is good practice.

Putting It Together

The 1Zpresso Chestnut G1 does a lot right for the price. Consistent stainless steel burrs, external adjustment, good build quality, and strong performance for drip, pour-over, and French press make it one of the better sub-$50 hand grinders available.

It won't satisfy serious espresso drinkers, and it's not as fast as an electric grinder. But for the traveler, the minimalist kitchen brewer, or anyone who wants to start grinding fresh without a big investment, the G1 is a genuinely good starting point.