6 Best Espresso Knock Box: From Home to Professional Use

crazy by Editorial Staff | Posted on January 23rd, 2023

Morning coffee is a staple in many people’s daily routines. The anticipation of the finished brew is half the fun; the other half is with the beans grinding and the toasted aroma of the coffee. And, of course, when you’re done with your espresso, you’ll need to get rid of the used puck. You could walk over to your trash can but accidentally damage your portafilter. To avoid this, you can use a knock box. With a knock box, tap the portafilter next to your espresso machine.

Best coffee knock box in the market today

We compiled our top 5 picks for knock boxes to help you decide what you should buy. Some of these picks prioritize value for money, while some focus on style and compactness.

Closed up lumps of coffee grind filled on metal knock box on busy day.

1. Breville BCB100 Barista-Style Coffee Knock Box – Top Pick

If you have a large family and make several cups of coffee daily, this is an excellent option because you won’t have to empty it as often. Despite its large capacity, it has a reasonable price. In addition, the inside cup is detachable and dishwasher safe, making it one of our favorite features.

There are, however, drawbacks to using the BCB100. While other models’ plastic polymer bars withstood extensive testing with no dents or other damage, this one did not fare as well. In addition, it would take up too much room on your counter.


  • With a polymer ring around the base for slide prevention


  • Awkward bar height
  • Takes up too much counter space
  • Polymer bar is not that durable

2. Cafelat Tubbi Knock Box – Most Compact

Cafelat produces a wide variety of high-quality espresso-related items. If style is your priority, you should go for this since the sleek plastic Cafelat Tubbi is available in five hues, one of which is a vivid yellow-green.

Tubbi’s removable crossbar, which is not permanently attached to the box, is a standout feature. This little container is ideal for use with portafilters that feature a narrower opening. In addition, it’s made of sturdy ABS plastic, making it quieter since the plastic dampens vibrations.


  • Space saver
  • Big capacity
  • Comes in 5 colors
  • Easy-to-maintain; dishwasher-safe
  • Removable and food-safe rubber bar


  • Rubber bar durability needs improvement
  • Tool lightweight tends to slide off

3. Dreamfarm Grindenstein Knock Box – Best Looking

The Dreamfarm Grindenstein Knock Box is durable because it is composed of ABS plastic over a steel core. The plastic construction helps it dampen sound and vibration. In addition, being 14-ounce and only four inches tall, it can easily sit on the drip tray of your espresso machine, clearing up valuable space. It can only hold about five or six pucks before it needs to be emptied.

In terms of aesthetics, it comes in red, black, and silver colors. However, this knock box was a little trickier due to its narrow entrance. You may need to perfect your technique to prevent the grounds from spilling.


  • Sturdy
  • Space saver
  • Dishwasher-safe
  • With a non-slip rubber ring


  • The bar cannot be removed
  • Does not have a large capacity
  • Narrow entrance making it hard to use

4. Rattleware Wood Knock Box – For Coffee Shops

This espresso knock box has a high-quality build and a huge volume, making it suitable for use in a home or a small cafe/office setting. It can accommodate even the most avid coffee drinkers with dimensions of 5.5 by 6 by 4 inches.

Its sturdy construction ensures it withstands years of hard use without showing signs of wear. Stainless steel is used in every aspect of the knock box insert, including the bash bar, which is solidly welded in place and covered with rubber. The box, made of maple wood, will look great on your espresso bar and house the insert.


  • Comes in various sizes
  • The rubber bar cover can be replaced
  • Comes with rubber to prevent sliding
  • With rubber rod for sound absorption
  • Dishwasher-safe stainless steel insert


  • Pricey

5. Apexstone Stainless Steel Espresso Knock Box

The Apexstone Stainless Steel Espresso Knock Box could be the best knock box for the money if you’re on a limited budget. Despite its budget-friendly price, durability is never compromised. All its components are stainless steel, lending it a sophisticated air. This knock box is commonly found in cafes, western dining establishments, pubs, and even home kitchens due to its large capacity and roomy aperture that prevents grinds from flying everywhere.


  • Large capacity
  • Easy-to-maintain
  • Made from stainless steel
  • Weighted base for stability


  • Large footprint
  • Does not have a non-slip pad
  • Design needs improvement
  • Non-removable rubber-wrapped bar

6. Sage Knock Box mini

If you are looking for a compact knock box, you should opt for the Sage Knock Box mini. In the home espresso machine market, Sage products are considered the best. Sage is a subsidiary of the Breville Group. This Australian company has been producing high-quality kitchen appliances for over 80 years, so it is no surprise that they also produce a respectable espresso knock box.

Its straightforward construction makes it suitable even for individuals with large hands. In addition, with its stainless steel canister construction, the coffee knock box is built to last. The portafilter can be slammed hard into the rubber bar, which will cushion the impact and propel the used espresso grounds into the container.

It may not be able to retain as much ground coffee as some others, but it can still keep about 20 used coffee pucks, so it should be adequate unless you are churning out a lot of coffee every day.


  • Space-saver
  • With an anti-slip rubber base
  • Easy-to-clean, removable bar


  • It can be heavier compared to a plastic knock box

What is a knock box?

Also known as “bash bin,” t,” knock box is a horizontal bar against which the portafilter can be smashed to release the puck. You must place it beside your espresso machine for convenient puck disposal after each shot.

Reasons why you should invest in a knock box

Consider these possible returns on your investment in a knock box before you decide against it.

Prevents potential portafilter damage

When removing the puck from the portafilter to the trash, you must apply pressure to ensure no debris remains. This puts your portafilter at risk of damage. However, if you have a knock box, that puck will be easily collected, and you won’t have to apply physical force on your portafilter.

Affordable and requires little upkeep

Knock boxes, used to brew espresso, are a relatively cheap accessory requiring little upkeep. Occasionally, you should wash them. However, they may be cleaned with little effort.

It prevents the buildup of odor.

An additional benefit of using a knock box to store used coffee grounds is that it helps to contain the odor. Wasted coffee grounds have an offensive odor, so keeping them from piling up is important. The odor will permeate your entire home if you throw them out.

Various types of knock boxes for espresso

You may put the countertop knock box wherever you like on the counter and pull them behind the appliance when you’re done cleaning the back. That is why they are the most user-friendly choices. However, consistently knocking portafilters at an elevated level, especially for shorter persons or extra-tall counters, may not be ideal barista ergonomics because of the stress it places on the wrists.

The floor standing knock box

This is the best freestanding option for cafes in terms of maximizing counter space. You no longer have to attach, let alone install it. In addition, the knock box can be customized to fit your space, which is a huge plus for baristas, but it also means they’ll have to be careful to avoid bumping into it as they do their work.

The drawer knock box

Drawers, another concealed knock box, can be set up in the space beneath a counter. A drawer is a suitable substitute if you desire a built-in knock box but lack the necessary counter space. It can be relocated, albeit it won’t be as easy as picking up a countertop knock box and repositioning it.

The built-in knock box

Compared to freestanding knock boxes, those built into a counter give your cafe a sleeker, more professional look. If you put a container under your counter, the grinds will go there, making that area much easier to clean.

Knock Box Buying Guide

When looking for the best espresso knock box for your espresso grounds, there are a few key factors to consider.

Determine the size and capacity

When choosing the right espresso knock box, it’s important to think about the size and capacity you need. If you’re looking for a knock box for your home kitchen, a smaller capacity box might be suitable.

However, a larger capacity box may be more practical if you have a busy cafe or restaurant. If you’re unsure what size you need, it’s best to measure the number of espresso pucks you typically produce in a day to give yourself an idea of the capacity that would suit your needs.

Choose a material

Once you have determined the size and capacity of the knock box that you need, it is time to look at the material. Knock boxes are usually made from either plastic or stainless steel. Plastic knock boxes are usually more affordable and lightweight, making them great for home use.

However, stainless steel is the way to go if you want a knock box that will last for years. Stainless steel is also more durable and can withstand heavy use in a busy cafe environment.

Consider a design with a handle

The design of the knock box should also be considered to ensure that it is user-friendly and comfortable. Many espressos knock boxes feature handles that make it easier to move them around. The handle should be easy to grip and should be able to hold the weight of the box with ease. It should also be made from a durable material that won’t easily break or crack.

Evaluate the quality of construction

When choosing an espresso knock box, it is important to evaluate the quality of its construction. A well-constructed knock box will be made of durable materials, such as stainless steel or wood, and should have non-slip rubber feet to ensure stability.

Additionally, look for a knock box with a securely attached handle that won’t come loose over time. The Breville BES001XL Knock Box Mini is a great example of a knock box with high-quality construction, as it is made of stainless steel and has non-slip rubber feet.

Shape and design

Once you have determined the size and capacity of the knock box that best suits your cafe, it is time to look at the shape and design of the knock box. Knock boxes come in various shapes and sizes, including round, rectangular, and square. Some designs may even include a handle for easy carrying and storage.

Consider the space available and the aesthetic that best fits your cafe’s interior design when selecting a knock box shape or design. For example, a rectangle or square knock box with a handle might be the best choice if you have limited counter space.

Cleaning and Maintenance Tips for Your Espresso Knock Box

Cleaning and maintenance are essential for your espresso to knock box to ensure it lasts for years and keeps your coffee area clean. Regular cleaning of the knock box should involve dumping the used grounds and rinsing the filter with soap and water.

Regular Cleaning

Regular cleaning is essential to keep your espresso knock box in good condition. Knock the used espresso grounds from the basket after every shot and rinse it out. Dumping out the knock box AND washing it with soap and water should be part of your daily cleaning ritual. To stop mold, empty the coffee knock box every two days into the compost bin and clean it once a week with a microfiber on the drip tray.

The traditional cleaning method involves scooping the remaining coffee grounds into the garbage and rinsing the filter to remove any residue. Deep clean and dry all removable components (baskets, handles, water tank, milk pitcher, drip tray, tamper, knock box, etc.) thoroughly for best results.

Preventive maintenance tips

In addition to regular cleaning, preventive maintenance of your espresso knock box is also key to maintaining its efficiency and longevity. To ensure that it continues to perform optimally, inspect the box and bar regularly. If the bar has become loose or needs replacing, be sure to do so as soon as possible.

Also, if the knock box has begun to show signs of rust or corrosion, clean it with a mild detergent solution and dry it thoroughly before storing it. These steps will help ensure that your espresso knock box continues to provide quality performance for years to come.

Frequently asked questions

Is it normal for the odor to come out from knock boxes?

No, unless the grounds have been left in the espresso knock box for a long time and have mildew growing, it should not have any smell. The contents of your knock box should be emptied at least once a week, and preferably more frequently if it is always used.

Do I have to own a knock box?

A knock box isn’t necessary, but it can make your life easier and easy and cheap. This is especially true if you want to repurpose your grounds. Also, it keeps you from whacking your coffee grounds directly into the trash, which is dirty, or into the sink, which may cause blockage in the drains.

Disclaimer: This post contains affiliate links, which means I may receive a small commission, at no extra cost to you, if you make a purchase using these links. Remember to support us by purchasing through the Amazon/Walmart/Impact Radius links provided. Last update on 2024-06-16 / Affiliate links / Images from Amazon Product Advertising API

Disclosure: No compensation or free products were received in exchange for writing this review.


Editorial Staff

The editorial staff at Crazy Coffee Crave is a team of coffee enthusiasts & Baristas who enjoy the one thing we all think about as soon as we get up in the morning. Trusted by thousands of readers worldwide.