Manual Coffee Grinder

Hario Mini Mill Slim Plus Manual Coffee Grinder

by Hario

4.1
★★★★☆ 4.1 / 5

The Hario Mini Mill Slim Plus is a budget-friendly, portable manual grinder that delivers decent grind consistency for pour-over, French press, and even espresso with patience.

  • Ceramic conical burr mechanism for uniform grind consistency
  • Slim, compact body designed for easy one-handed use
  • Adjustable grind settings from fine espresso to coarse French press
  • Detachable handle for compact storage and travel
4.1/5
Editor score 82%
#58 of 59 · Manual Coffee Grinder
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The verdict

The Hario Mini Mill Slim Plus is a budget-friendly, portable manual grinder that delivers decent grind consistency for pour-over, French press, and even espresso with patience. While it lacks the precision and durability of premium hand grinders, its compact design, ceramic burrs, and affordability make it a solid choice for beginners, travelers, or anyone wanting a simple backup grinder.

At a glance

Our full review

The Hario Mini Mill Slim Plus is a compact manual coffee grinder built for anyone who wants café-quality grounds without the bulk or expense of an electric machine. Its slender, cylindrical body is made from durable, food-safe plastic that keeps the overall weight low while still feeling sturdy in hand, and the transparent grounds catcher lets you see exactly how much coffee you have ready to brew. At the heart of the grinder sits a conical ceramic burr, prized for its ability to produce even, consistent particle sizes that translate into a more balanced and flavorful cup, whether you're pulling espresso, brewing pour-over, or making French press coffee.

What sets the Slim Plus apart from Hario's original Mini Mill is its improved grip and ease of use. The updated design includes a wider, more comfortable handle and a redesigned crank that turns more smoothly, reducing hand fatigue during grinding. The grind adjustment mechanism is simple yet precise, controlled by a small dial at the base that lets you dial in everything from fine espresso-style grounds to coarse settings suited for cold brew or French press. Because it's fully manual, there's no need for batteries or electricity, making it an ideal companion for camping trips, travel, or anyone who simply enjoys the tactile, meditative ritual of hand-grinding their morning coffee.

Compact enough to tuck into a kitchen cabinet or a travel bag, the Mini Mill Slim Plus disassembles easily for cleaning, and its parts are simple to wipe down or rinse, ensuring that oils and residue don't build up over time and affect flavor. The grounds container doubles as a measuring cup, adding a bit of practical versatility to its minimalist design. For coffee lovers who value control over their grind size, portability, and a straightforward, low-maintenance brewing accessory, this grinder from Hario delivers reliable performance in a small, thoughtfully engineered package that fits naturally into daily rituals or on-the-go adventures.

Specs & ratings

Burr MaterialCeramic conical burr
Grind SettingsFine to coarse, adjustable
Capacity24g beans / 20g ground
Body MaterialPlastic with glass container
Dimensions14.5 x 6.7 cm (H x W)

Pros & cons

👍 What we liked

  • Very affordable entry point into manual grinding
  • Compact size ideal for travel, camping, or small kitchens
  • Ceramic burrs resist heat buildup and rust, unlike metal blades
  • Easy to disassemble for cleaning
  • Wide range of grind adjustments suits multiple brew methods

👎 Worth noting

  • Grind consistency less uniform than higher-end hand grinders
  • Small hopper capacity requires grinding in batches for multiple cups
  • Plastic components feel less premium than metal-bodied competitors
  • Can be slow for coarser grinds due to narrow burr chamber
  • Handle mechanism may feel wobbly to some users

What owners are saying

★★★★☆

Great budget grinder for travel

I bought this for camping trips and it's been fantastic. Small enough to fit in my bag, and the grind quality is way better than I expected for the price. Takes a bit of arm effort for finer grinds though.

MMarcus T. · 2023-11-02
★★★★☆

Perfect starter grinder

As someone new to manual brewing, this was an excellent entry point. Easy to use, easy to clean, and the glass jar looks nice on my counter. Highly recommend for beginners.

EElena R. · 2024-01-15
★★★★☆

Good but not great for espresso

Works fine for drip and French press, but getting a consistent fine grind for espresso takes forever and isn't perfectly even. Still, for the price, it's a decent tool.

DDavid K. · 2023-09-20
★★★★☆

Compact and reliable

I've had mine for several months now and it still grinds consistently. The plastic body feels a little light, but functionally it does its job well every morning.

PPriya S. · 2024-03-05