"The Ultimate Cheat Sheet On Coffee Grinders
The Benefits of Using a Coffee Grinder
Experts are of the opinion that adding a grinder for coffee to your morning routine is a great upgrade. The higher-end models feature burr grinders, which are comprised of grooved surfaces which can be adjusted to ensure an even grind.
Unlike a blade grinder, these types of grinders prevent the formation of oxidation and ensure that your grounds are even in size.
Conical Burrs
Burr grinders have greater capacity and use opposing angles cutting surfaces to grind whole beans into tiny pieces. They create fewer fines (also known as dust) than blade grinders and they allow you to determine the size of particle is produced by adjusting the distance between the burrs.
There are two primary burr types: flat and conical. The differences between the two kinds of burrs are subtle but significant and each one has its own strengths.
While blade grinders have sharp blade-shaped teeth, which bludgeon the coffee with each pass, burr grinders use disc-shaped burrs to grind the beans. The two burrs can be moved closer or further apart to determine the desired grind size between coarse and fine. If they are set properly they will produce a homogeneous grind that has fewer tiny fragments and without heat.
A top quality burr grinder should have a lubricated mechanism to reduce friction and extend the life of the blades. They should also be cleaned easily, reducing the accumulation of non electric coffee grinder residue. While there are hand powered burr grinders, commercial flat burr grinders are nearly always powered by electricity since they require more power than could be provided by the human hand by itself.
There are variations within every category of burr shapes between different models and brands. These variations are not due to the shape of the burrs but rather to the pattern of their geometry and how that is related to the distribution of particle sizes. For instance, some conical burr grinders coffee such as the Niche Zero have very low retention, whereas other flat burr grinders, like the Iberital MC2 boast high retention.
Some coffee enthusiasts claim that different styles of burrs are more effective in bringing out certain flavors in the roast and bean. However, this is an area that is largely anecdotal and not scientifically proven.
Flat Burrs
Flat burrs are circular plates with sharp ridges that face each opposite and crush the coffee beans between them. They're the most commonly used burrs used in grinders for home and commercial use and are the most common type used in manual coffe grinders.
Compared to conical burrs, flat ones can have more trouble maintaining the same size of grind due to the angled shape of their cutting edges may leave behind fines and grit. This can lead to less extraction and bitter tastes. But, this shouldn't be an issue for all particular people, especially as new developments in burr design allow for the same clarity that is found in flat burrs, albeit with more uniform the distribution of grind size.
When it comes to deciding between a conical or flat burr grinder, the decision will largely come down to your specific grinding requirements and individual preferences. For instance a barista who grinds large quantities for several cups throughout the day could be more likely to opt for a conical burr grinder since it produces less fines and reduces oxidation time which makes it easier to store and reuse.
Another consideration is the amount of heat that a grinder generates during operation. This is important as it can affect the taste and quality of your cup coffee. The more friction that a grinder produces and the higher the heat it generates. This could alter the flavor of your beans and cause excessive extraction. Flat burr grinders produce less heat than conical grinders, which can give you a cleaner overall taste.
If you're in the market for a coffee grinder with flat burrs, there's a wide range of options from reputable manufacturers like Baratza and Eureka. For example, the Fellow Ode Gen 2 is a popular choice because it's easy to calibrate and has a an extremely high level of precision. It's also extremely quiet and suitable for espresso. However it doesn't create as fine a grind as Baratza or other top models and may struggle to produce medium-fine grinds for espresso.
Variable Grind Settings
The process of grinding, no matter what kind of grinder you choose to use creates a variety of particle sizes and shapes. It is difficult to measure this accurately unless you own expensive equipment like laser particle difffraction.
The majority of coffee grinders don't offer a precise measurement, but instead use adjustable dials that permit users to choose between various sizes for grinding. Dials are marked with numbers or dots to indicate smaller and larger sizes. The numbers are sometimes followed by arrows which indicate the direction in which the dial should move to make the grind more coarse or more fine.
In addition to the numbering system, a lot of grinders have other visual representations that can help in deciding on the best setting, like a series of dots or a stepped adjustment mechanism. While these indicators are helpful however, they are not a complete guideline and will require you to experiment with the various settings.
For instance, a dot or number that appears close together could mean that the burrs are set delicate, whereas an asterisk or number that appears farther apart indicates that they are very coarse. When selecting a grinder setting it is important to keep in mind that even small adjustments can make a big difference, so take care not to go too far beyond the intended range when making adjustments.
Dialing in a grinder requires finding the ideal grind setting for the coffee and the method of brewing. The ideal grind setting allows for the most balanced and full-bodied taste to be exhibited while remaining within acceptable limits of extraction. This is a constant pursuit as even small variations could result in coffee that has been over- or under-extracted.
A fine grind is perfect for espresso because it increases the amount of water that is in contact with the ground during the short time required to extract. A setting that is similar in consistency to powdered sugar works for most methods of brewing, such as pour-over, French press, Aeropress and Turkish coffee.
Easy Cleaning
As coffee grinds pass through your grinder the grounds and oils get stuck inside the nooks and crannies of the machine. The oils that accumulate eventually go rancid and begin to alter the taste of your espresso. Regular cleaning can keep the build-up of coffee oils and keeps your grinder running at its best home espresso grinder.
To clean your grinder, start by unplugging and removing the grounds bin and hopper. Then, remove the burrs. Be careful not to scratch the sharp burrs that can easily scratch or grate inner surfaces. Use a grinder cleaning brush to remove any coffee stuck on the burrs. If not employ a soft toothbrush or toothpick to gently lift the coffee grounds from the burrs. Once you have removed the burrs, and any other coffee particles from the machine, wipe it clean with a dry cloth.
Cleaning your grinder regularly is crucial, whether you use a burr or blade grinder. The aroma and taste of coffee beans is lost as soon as the beans are ground. The best cup of espresso is made of freshly ground coffee. A grind that is too fine can cause bitterness and over-extraction while too coarse a grind can result in under extraction and an unsavory flavor.
Cleaning your grinder on a regular basis is the only way to ensure that it stays in optimal shape and can continue producing quality grounds for your morning brew. Leaving oil residues and old ground coffee to build up in the nooks and crevices could result in blocked blades and lower-quality coffee. The stale coffee you leave to collect on the burrs can also affect the flavor of your coffee.
There are a variety of ways to clean a coffee grinder, but one of the most effective is using a tablet for cleaning coffee grinder compact grinders (such as Urnex Grindz). These tablets are made from edible grains that bind to and remove coffee oils. These tablets are an excellent alternative to soak your burrs in a solution of water, which could damage or dull them. You can also clean your burrs with brushes or blowing them away using compressed air or an air blower for your keyboard.