Selection Of Coffee Grinder

Selection Of Coffee Grinder

The beauty of coffee is that you can walk the last mile before you drink it.

Even in the end is to taste, it is more than tea grinding fun, more than wine grinding and brewing fun.

But many people are used to buying a ready-made powder or asking the shop to grind it into a big bag home slowly.

The best way is to ground and cook, or grind a small amount and use it quickly.

Since coffee can bring so much pleasure, the tasteful of us can't help but realize how important the grinder is.

Why don't you just buy ready-made powder? Do you have to grind it every time?

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The Benefits Of Fresh Grinding

  • Fresher: Raw beans have a much smaller air contact surface area than ground coffee and last longer.
  • Better to drink: Freshly ground coffee keeps it fresh because it starts to oxidize as soon as it is ground. These aromatic substances dissipate in 15 to 20 minutes. So why not save the goodies for your coffee mug?
  • You can adjust the grinding thickness of the coffee beans.
  • Ground beans will make you feel more professional and like a barista!
  • If you're convinced, the next question is, which grinder should you choose? Choose a cheap blade type, or to pay attention to a bit of knife plate type?

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What's The Difference Between These Two Grinders?

What is blade type? How does it work?

Basically, a blade is a piece of metal that is spun electrically to cut up beans, and you can roughly control the size of the powder by rotating the blade, just like putting coffee beans on a cutting board and chopping them with a knife.

Advantages Of Blade Type

Simple adjustment, basic grinding function, cheap

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Blade shape defect

1. Imprecise grinding quality and unstable brewing results: since the blade grinder grinder grinds all beans at the same time, the size of the coffee powder may not be equal, because the blade will mince coffee beans without purpose, which means that the ground powder will have coarse particles, resulting in insufficient extraction, and there will be too finely cut powder, resulting in excessive extraction.

2. The fine powder mentioned in the first point can block the filter of the coffee maker or cup, or can go right through the filter and leave fine grounds in the cup.

3. The biggest drawback of the blade machine is the heat produced during grinding - this heat can cause the coffee to taste burnt and bitter, especially if you grind it very fine, resulting in longer contact between the beans and the blade.

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What Is A Knife Grinder? How Does It Work?

Grind the coffee beans in a quiet motion through two metal knife. The spacing of the cutters controls the thickness of the grind. By adjusting the spacing, the ground particles are small enough to pass through the cutters. Imagine cutting coffee beans into thin slices one by one.

Knife Plate Type Advantages

The grinding thickness is consistent and more uniform and the extracted coffee flavor is more stable.

Because grinding does not produce much heat, it retains the aroma and oils of the coffee

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Precision and finer degree of grinding. Taper knife can be used for fine ground espresso, and Turkish coffee, also suitable for coarse ground French press.

Knife Grinder Can Also Be Divided Into Two Main Types:

Knife Grinder Can Also Be Divided Into Two Main Types:

Flat Knife Grinder (Flat Burr) :

Smaller cutters - this is also an economical option. The cutter head will make a lot of noise because of the fast rotation, and the faster the rotation is also likely to degrade the quality of the grinding (the knife disc will make the grinding hot).

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Conical Grinder (Conical Burr) :

It is the best type of grinder in the author's opinion. The knife rotates more slowly than the flat knife. It is not only quieter but also more stable when grinding. Suitable for deep baking with high grinding grease or light baking with aroma type, because the grinding quality is high and will not block the filter. The larger cutter head also helps to stabilize the heat dissipation.

How To Maintain The Knife Grinder?

Clean the grinder regularly, especially after grinding the flavored beans. It's that simple! The knife grinder does it all.

If you have to use only a blade grinder, remember to pay attention to the following things:

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1. Empty all powder after each grinding, especially the powder accumulated under the blade.

2. Do not grind for more than 15 seconds - avoid excessive heat from cutting.

3. Shake the grinder during grinding so that the machine can cut the coffee beans more evenly.


  • Freshly ground coffee is fresher, tastier, more flexible, and more flavorful than ready-made powder
  • The grindercan be roughly divided into blade type and knife plate type two
  • The price of the blade mill is lower, but the grinding quality and stability are not good
  • Knife disc grinder can be subdivided into a flat knife and taper knife
  • The only secret to maintaining your mill is to clean it regularly

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