Mulli KF-YM-01 Portable Burr Coffee Grinder: Your Daily Dose of Coffee Heaven

Published on Jan. 21, 2024, 9:05 a.m.

In the world of coffee, freshly ground beans are the key to a delicious cup. A coffee grinder, an essential tool in the brewing process, plays a crucial role.

Are you a coffee connoisseur always on the lookout for that perfect cup of freshly ground java? Well, friends, let me introduce you to the Mulli KF-YM-01, a portable wonder machine that’ll have you sipping coffee heaven wherever you roam. Grab a cup and let’s dive right in!


The Mulli KF-YM-01 Portable Burr Coffee Grinder is a sleek and compact burr coffee grinder that gives you delicious, customized grinds in a portable package. Its adjustable ceramic burrs allow you to fine-tune your grind size. And its lightweight design (just 1.52 pounds!), USB-C charging, and built-in battery make it easy to take your gourmet coffee on the go.
The ritual of grinding coffee beans has been a cherished tradition for centuries, with each culture developing its own unique methods and preferences. The Mulli KF-YM-01 brings this tradition into the modern age, allowing you to savor the experience of freshly ground coffee wherever you are.

 Mulli KF-YM-01 Portable Burr Coffee Grinder

Key Features

This electric and manual grinder has several notable features:

  • Burr grinding mechanism for consistent grinds: Unlike blade grinders that chop beans unevenly, burr grinders crush them between two abrasive surfaces, resulting in uniform particle sizes that are crucial for optimal flavor extraction.
  • 5 grind size settings from fine to coarse: This allows you to achieve the perfect grind for espresso, pour-over, French press, and other brewing methods.
  • 150W motor with 78RPM speed
  • Hopper capacity: 150 ml
  • Portable and lightweight at just 1.52 lbs
  • Battery capacity: 800mAh
  • Charging time: Approximately 2-3 hours

 Mulli KF-YM-01 Portable Burr Coffee Grinder

Design & Build

The Mulli KF-YM-01 Portable Burr Coffee Grinder has a stylish transparent plastic body that shows off the burr mechanism inside. The simplicity of the one-button design makes it easy to use. It feels sturdy and well-constructed. The grinder is made of food-grade ABS plastic and is available in three colors: gray, gold, and white.

 Mulli KF-YM-01 Portable Burr Coffee Grinder

Ease of Use

With just a single power button and clearly marked grind settings, this grinder is very intuitive to operate right out of the box. Simply add beans, select grind size, press the button, and you’re ready to brew.

 Mulli KF-YM-01 Portable Burr Coffee Grinder

Grinding Experience

In testing, the Mulli KF-YM-01 Portable Burr Coffee Grinder produced uniform, consistent grinds at all settings. The grounds had minimal fines and maintained an even particle size. It took 2-3 minutes to grind enough for one cup, a reasonable speed for a portable burr grinder. The burrs didn’t overheat during grinding, which is important because excessive heat can degrade the flavor of your coffee. The Mulli KF-YM-01 excels in producing consistent grinds, a crucial factor for brewing delicious coffee. The ceramic burrs ensure uniform particle size, minimizing fines and maximizing flavor extraction.

 Mulli KF-YM-01 Portable Burr Coffee Grinder


Taking apart the grinder for cleaning is straightforward - no tools required. The detachable burr mechanism can be rinsed easily under running water. Reassembly is fast and simple.


As a new model, long-term durability remains to be seen. But the 1 year warranty provides peace of mind.


The plastic construction seems durable and safe. And the lithium battery power source is compact and convenient without cumbersome cords.

Suitable For

The Mulli KF-YM-01 burr grinder is ideal for anyone who wants to enjoy fresh, flavorful coffee at home or on the go. Its portable design makes it perfect for:

  • Travel - Grind fresh coffee in your hotel, tent, or car.
  • Office - Brew barista-quality coffee at your desk.
  • Small Spaces - Compact size ideal for RVs, boats, dorms.
  • Camping & Hiking - Manual crank powers off-grid brews.
  • Commuting - Grind before work and savor during your commute.
  • Coffee enthusiasts and professionals who value freshly ground coffee but need a portable solution.

User Feedback: A Mixed Bag of Beans

The Mulli KF-YM-01 Portable Burr Coffee Grinder has garnered a diverse range of user opinions, reflecting the varying needs and expectations of coffee enthusiasts. Many users rave about the grinder’s ability to produce consistent, uniform grinds, a crucial factor in brewing a flavorful cup of coffee. They praise the ceramic burrs for minimizing fines and maximizing flavor extraction, often comparing the grinder’s performance favorably to more expensive models.

Portability is another highlight frequently mentioned in reviews. Users appreciate the grinder’s compact size and lightweight design, making it an ideal companion for travel, camping, or simply saving counter space. The convenience of both battery power and a manual hand crank further enhances its portability, allowing users to enjoy freshly ground coffee wherever they are.

However, the grinder’s slower grind speed has been a point of contention for some users. While some find the 2-3 minutes per cup grind time acceptable, others express frustration with the pace, especially compared to electric countertop models. The battery life also receives mixed reviews, with some users finding it sufficient for their daily needs and others wishing for longer durations between charges.

Durability concerns have also surfaced in a few reviews, with some users reporting issues after several months of use. While the majority of users have not experienced problems, these reports raise questions about the grinder’s long-term reliability.

Overall, the Mulli KF-YM-01 Portable Burr Coffee Grinder seems to be a well-received product, particularly for its grind consistency and portability. However, potential buyers should be aware of its slower grind speed and limited battery life. The jury is still out on its long-term durability, but the one-year warranty offers some peace of mind.

Pros & Cons


  • Compact and lightweight
  • Even, consistent grinds
  • Multiple grind settings
  • Easy to use and clean
  • Manual hand crank for off-grid use
  • Good value for money


  • Slower grind speed
  • Small grind capacity
  • Battery life could be better
  • Durability concerns over long term use
  • Can be noisy during grinding


With pro-level performance at a wallet-friendly price, the Mulli KF-YM-01 Portable Burr Coffee Grinder offers excellent value. It delivers deliciously consistent grinds that rival more expensive models. For fresh, flavorful coffee on a budget, this portable burr grinder is hard to beat.


The Mulli KF-YM-01 Portable Burr Coffee Grinder is a game-changer for coffee lovers who crave freshly ground beans on the go. Its compact size, consistent grinds, and dual power options make it a versatile and valuable addition to any coffee enthusiast’s toolkit. While it may not be the fastest grinder on the market, its portability and affordability make it a compelling choice for those seeking convenience and quality in one package.


  • Brand: Mulli
  • Model: KF-YM-01
  • Grinder Type: Electric and manual burr grinder
  • Motor Power: 150 watts
  • Grind Settings: 5
  • Grind Capacity: 22-33g
  • Hopper Capacity: 150 ml
  • Grinding Speed: 78 RPM
  • Dimensions: 5.51 x 3.54 x 9.84 inches
  • Weight: 1.52 lbs
  • Material: ABS plastic
  • Burr Material: Ceramic
  • Power Source: Built-in 800mAh rechargeable battery
  • Battery Life: 5-6 grinds per charge
  • Charging Method: USB-C cable (included)
  • Special Features: LED battery indicator, travel case included
  • Warranty: 1 year

What’s Included

Inside the box, you’ll find:

  • 1 x Mulli KF-YM-01 Portable Burr Coffee Grinder
  • 1 x Manual crank handle
  • 1 x Cleaning brush
  • 1 x USB-C charging cable
  • 1 x Travel case

Frequently Asked Questions

How long does it take to grind coffee beans?

Based on the information provided, the Mulli KF-YM-01 Portable Burr Coffee Grinder can grind enough beans for a single serving in around 45 seconds. Note that grinding time may vary depending on your chosen grind setting.

What types of coffee can I grind?

This versatile grinder offers five grind settings, giving you control over the coarseness of your coffee. This makes it suitable for various brewing methods including:

  • Espresso: (finest setting)
  • Pour-over: (medium setting)
  • French press: (coarsest setting)

How much coffee does the jar hold?

The Mulli KF-YM-01 Portable Burr Coffee Grinder’s jar has a capacity of 5 ounces (150 ml). This is ideal for single servings or perhaps enough for two smaller cups.

Is it easy to clean?

Yes! The Mulli KF-YM-01 Portable Burr Coffee Grinder is designed with easy cleaning in mind. You can wash the removable parts in the sink (but please note that dishwasher cleaning is not supported).

Can it be used manually if the battery runs out?

Yes, this is a significant benefit of the Mulli KF-YM-01 Portable Burr Coffee Grinder. It conveniently includes a manual grinding handle, ensuring you’re never without freshly ground coffee, even if the battery is low.

Is the grinder noisy?

The Mulli KF-YM-01, like most burr grinders, can produce some noise during operation. However, it is generally considered quieter than blade grinders.


Coffee grinding has a rich history, dating back centuries when various methods like mortar and pestle were used. Today, burr grinders are favored for their precision and consistency, allowing coffee lovers to unlock the full potential of their beans. Here are some tips to get the most out of your Mulli KF-YM-01:

  • Experiment with grind settings: Don’t be afraid to experiment with the different grind settings to discover the perfect coarseness for your preferred brewing method.
  • Charge regularly: Ensure a full battery by charging the grinder regularly, especially if you use it frequently.
  • Clean thoroughly: After a few uses, give the grinder a thorough cleaning to prevent buildup of coffee residue.
  • Use the manual handle: If you’re looking to conserve battery or want a quiet early morning grind, opt for the manual handle.
  • Adjust grind settings for different beans: Experiment with different grind settings depending on the type of coffee beans you’re using. Lighter roasts may require a finer grind, while darker roasts may benefit from a coarser grind.