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Calibrate your coffee grinder for better tasting coffee



If you love to brew your own coffee, you know that grinding beans themselves are an important step to ensure a perfect cup. But even more important than that is to make sure your coffee is evenly smooth. Uniformly sized grounds are critical for making superb coffee.

Unfortunately, even the finest burr coffee grinders can provide a mixture of particle sizes. This roughness corrupts the ideal taste of your bridge, which ultimately impedes its potential taste.


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But don't lose heart. In this guide I offer an easy way to test and calibrate your coffee grinder in the home so that it will work at the top.

And if you suspect your old workhorse doesn't grind as it used to, you're lucky. These steps will also confirm it.

Even fine burr coffee grinders create bases with mixed particle sizes.


Tyler Lizenby / CNET

Why grind uniforms

A uniform grind size can sound like another thing for coffee doughs to defeat over. If you love good joe but it's no trivial issue.

We assume you have an excellent coffee maker, plus fresh coffee whole beans. Now connect with a mediocre mill. The drinks you brew may not be bad. They can even be pretty good. But to gather the ultimate flavor from your beans you need to do better.

The cause boils down to the surface. Finer grounds have more, larger pieces have less. Then, the water extracts coffee compounds from fine grounds faster than coarse grounds.

This leads to uneven extraction. Nice, covered grounds add bitterness to brewed coffee. Large, under-stretched grounds give weak flavors and acidity to the party.

Kruve Sifter helps you find out how well your grinder processes coffee beans.


Tyler Lizenby / CNET

Step 1: Collecting Your Tools

You need two tools for this project. The first is a regular kitchen scale. You may already own one. Usually about $ 20, they are relatively inexpensive but if you don't.

The second item, the $ 49 Kruve Sifter Two, consists of two stainless steel nets, along with three inner compartments. It is the basic model intended for overheating of brewing. Yes, it's a pretty specific tool, but you can see why.

Make sure you also have some whole coffee beans at hand. Finally, keep your coffee grinder in hand because you will use it.

Start in a rough environment and work your way towards finer gate sizes.


Brian Bennett / CNET

Step 2: Weigh and Grind

First weed out 10 grams of coffee beans. Then set the coffee grinder's coarseness. Start with the roughest setting that is still within the recommended range for your brewing method.

In my case, I used Baratza Encore ($ 139 on Amazon) set to 15 (0 to 40). At this point, it is a good idea to record the weight of each of Kruves sections (including the screens but not the lid). It will make life easier later.

Grind the coffee and drop it in Kruve's top section.

Drop your grounds in the top of Kruve Sifter.


Brian Bennett / CNET

Step 3: Sifting the Basics

The next step is to aim your basics. With the ground coffee inside Kruve, replace the lid. Shake the device back and forth horizontally for 60 to 75 seconds.

Be sure to press Kruve's pages periodically during the process. This helps to loosen any coffee grounds that can hold onto the walls of the interior compartment.

In the correct setting, your mill will create grounds that will stay in Kruve's middle section.


Brian Bennett / CNET

Step 4: Analyze the product

Carefully insert Kruve onto a flat surface, remove the lid and then separate its compartments. You should see that Kruve has sorted your bases into three sizes. Rough foundations will lie in the upper part, midsize grounds will be in the middle and fine particles will have landed in the bottom.

What sets the basics apart is the two screens that differ in porosity. Small particles pass through the first screen (800 microns). Grounds that are less nevertheless are about others (400 microns). Ideally, you want most of your reasons land in the middle house.

If your mill is set to the right roughness, most of your reasons will lie in the middle chamber, and you get a small, equal amount of rough and coarse grounds.

Confirm by weighing each Kruve chamber (still containing whitefish and grounds). Subtract from each value the weight of the empty chamber (which you recorded earlier). It gives you accurate amounts without having to transfer ground coffee to another container.

Step 5: Adjusting and Repeating

It is likely that you will get incredible results on your first try. For example, you may have more coarse grounds than medium or good. Or you can have too many finely ground pieces of coffee and not enough medium. In this case, attach your mill a few levels to finer slip. Then repeat the process until you succeed.

You may encounter a problem where your mill produces unbalanced sizes, regardless of the setting. If so, you probably have a bigger problem – worn burrs. In this case, you will probably need to buy new burr from your mill manufacturer. Another option is to send your machine to the factory for repair. And if everything else fails you can always shop for a brand new .


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