Blog entry by Audrea Nicastro
What You Need to Know About Burr Coffee Grinders
A burr grinder of good quality can make a huge difference in the flavor and consistency of your coffee. There are many models to choose from, ranging from cheap grinders that perform well in tests to more expensive grinders that come with additional features.
Picking the right model that meets your needs is essential. Burr grinders come with two cutting surfaces that can be moved together or further apart to alter the size of the grind. They are available in conical or flat shapes and can be powered either by a wheel or a gear reduction motor.
Direct Drive
Direct drive burr grinders, as the name suggests, are powered by a motor that has a a low speed that is directly connected to burrs. This means that when the machine is operating, both the motor and the burrs are spinning at the same time and resulting in a very quiet operation. In contrast to lower-quality motorized grinders and spinning blade spice grinders which result in an uneven grind, a quality direct drive burr grinder produces an extremely smooth, uniform grind that is ideal for espresso and other demanding techniques of brewing.
Burr coffee grinders have one or more burrs that can be adjusted with a variety of teeth that can be set closer to or further away to ensure that when the beans are crushed, they are broken down into a consistent smaller size of particles. The sharp cutting edges of the burrs permit the maximum extraction and a smooth, sweet flavor in your coffee. Although there are inexpensive commercial grinders that grind beans into the same size by pulverizing them rather than cutting them, this technique often results in jagged particles with different dimensions and uneven surfaces, which tend to remove less of the delicate flavors of your coffee.
The majority of home grinders come with two kinds of burrs, cone or flat. Flat burrs, referred to as flat plate, are found on all types of grinders, regardless of the speed or step. On the other hand, cone shaped burrs, called conical burrs, are more frequently seen in lower speed models and gear reduction models.
There are many aspects to take into consideration when selecting the right burr grinder, the most important factor is almost always going to be the method you prefer to use for brewing. A well-ground coffee bean is the key to a great cup of java, therefore selecting the best espresso grinder grinder is important.
The next thing to consider when buying a burr mill is the motor's design and whether it's step-free or not. Non-stepped grinders do not have pre-set grinding settings from the manufacturer and allow you to have full control of the size of the grind, however, they can be difficult to set as the process requires you to turn an hopper or lever that is slightly off center of its normal location. Stepped grinders, like the Baratza Sette and Vario, are a bit more traditional in design and have a series of steps that are easy to access and easy to identify when looking at your burrs.
Gear Reduction
A burr grinder uses two abrasive surfaces rotating by a distance set by the user to cut and grind food items such as beans and spices, peppercorns, and salt. The grinders can be operated either electrically or manually. Although they are more expensive than blade grinders, they are typically more durable and generate less heat during grinding which is important to preserving the quality of the final product. They come in various styles and with different features that can meet the needs of a wide range of users.
A quality burr grinder can assist you in making great espresso and coffee. Poor quality grinders can create heat, which can harm the oils present in coffee beans and create static electricity. If the grinder is opened in the wrong time the grounds may spring out. The best burr grinders have an efficient motor that rotates at a slower pace and is very quiet, which minimizes the transfer of heat to the beans and minimizes static electricity.
Some grinders claim to be burr-grinders however they only pulverize beans instead of cutting them. This isn't what a true burr-grinder is doing. These grinders typically have uneven, jagged particle sizes, which extract the flavor unevenly and result in a and sour taste.
When you are choosing a top quality burr grinder, be looking for a low speed setting, a large capacity for the grinding burrs, and a robust construction to maximize control over heat generation and to help keep the quality of the beans. You should also think about whether you'd like dosing or non-dosing grinding which will determine how much beans are ground at a time. Many of the electric grinders are dosing models, but they are also available in non-dosing models for those who just want to grind enough coffee to make one cup at each time. The Encore features a low-speed gear reduction motor that is quiet and can produce a consistent, fine grind without heat or static charge.
Ceramic
A ceramic burr mill uses a simple but reliable mechanism to grind the beans evenly. Its low-speed operation results in less heat, which preserves coffee's delicate taste. It's also more precise than blade grinders because the ceramic burrs shred rather than break the bean, creating an even finer grind. This leads to more consistent extraction when you're brewing coffee, whether you're making a drip or espresso.
The OXO burr mill grinder set performed very well in our tests compared to other grinders that are budget-friendly. It's a massive step up from the cheap blade grinders that are commonly found in kitchens, but true coffee lovers might want something more flexible. A good burr grinder can create a perfect grind for a variety of coffee-making methods and the top ones are more precise than cheaper models.
Most of the burr grinding machines we tested employ conical burrs, where a flat ring rotates upwards and downwards over an elongated rotor in the middle. They produce a finer smaller, more even size of the grind than the cheap blade grinders we tested, and generally are more loud and expensive than other burr grinders.
Some of the most expensive burr grinders, such as the Fellow Ode Gen 2, utilize flat burrs, which are easier to set and are quieter than the conical ones on our other favorites. Some of them provide greater options for setting and others allow you to switch out the burrs in the one best for brewing techniques like French press or espresso.
In addition, the majority of burr grinders are dishwasher safe for easy cleanup. They're also generally longer-lasting than the steel blades used in our other test winners, such as the Breville Smart Grinder Pro.
The Baratza Virtuoso+ has a extremely long life span for a burr grinder. It's an excellent choice for those seeking a high-end tool that'll last. The burrs that are flat are said to last for up to 500 pounds of coffee, which would suffice for about 10 years if you consume about a pound per week.
Steel
Burr grinders grind food using a pair abrasive surfaces that rotate. They can be conical or flat in shape, and they are available in ceramic or steel. The grinding surfaces have a large distance between them by default. However, they can be positioned closer to alter the size of the material that is ground. A good burr mill minimizes heat production during the grinding process. This is essential because excessive temperature can cause oils to evaporate. This is crucial to preserve the flavor of coffee.
Stainless steel is used to create the two burrs. It is strong and can withstand impacts that would damage ceramic burrs. However, this material will become worn out with time, requiring replacement. Luckily, the majority of manufacturers offer burrs to replace them that are easily swapped out for longer lifespan and more consistent grounds. They might also suggest that you change them on a regular basis based on the weight of coffee you grind.
The choice between flat and conical burrs depends on personal preference, both provide excellent grind consistency. They create an even and consistent grind size, which results in a more even extraction of the coffee during the brewing process. This is contrasted with blade grinders, which tend to pulverize the beans into irregularly-sized pieces that result in an unpredictable flavor profile.
Another advantage of burr mill grinder grinders is that they are more durable than blade grinders. This makes them a good choice for coffee lovers who are looking for an item that lasts for a long period of time and is made of the highest quality. Additionally, burr grinders tend to be quieter than blade Grinder grinders and don't require the continual oiling that blade grinders do.
Burr grinders can operate manually or by electric. Manual grinders require more physical effort, whereas electric models are powered via an electrical motor. Burr grinders powered by an electric motor are usually more efficient than manual models and require much less maintenance. However this type of grinder can produce excessive heat during the grinding process, which could alter the taste of your final brew.