Coffee grinder performance comparison between electric bean grinder and manual bean grinder

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Why is the coarse ground coffee powder suitable for trickling filter-the common grinding thickness diagram of coffee powder

Have you noticed that when drinking coffee outside, they all boast that "instant grinding" is used in fast food chains and convenience stores?. Can instant grinding really make coffee taste better?.

In fact, grinding coffee beans can improve the flavor of coffee immediately, because the "aroma molecules" of roasted coffee beans will volatilize over time.

The freshness of the whole bean can last longer. Once you grind the coffee beans, the fine particles will accelerate the aging reaction due to the large area of contact with the air, and the ground coffee powder can volatilize the original flavor in a few minutes to hours, especially Italian coffee.

If you want to make your own cup of coffee, "grinding and brewing" is one of the important links.

Then I think it is necessary to buy a bean grinder for my home. What is the difference between all kinds of bean grinders?

Hand mill, electric mill

Metal grinding knife, stainless steel grinding knife, ceramic grinding knife

Propeller type, parallel type Flat Burrs, cone type ConicaI Burrs, molar type grinding disc is also called "ghost tooth cutter head"

Direct output Doserless, component Doser, electronically controlled quantitative Electronic Control on Demand

What is the mystery of all these nouns?

Manual bean grinder is generally divided into

Wooden box type metal grinder manual bean grinder

Wooden box type metal grinder manual bean grinder

Use manual rotation, slingshot adjustment grinding thick and young, because the design limit grinding degree is generally not too fine, most of this kind can not be washed with water can only be cleaned with a small brush, long-term use will leave coffee bean oil "oil taste" and metal grinding knife "iron smell". But the operation is simple and the price is relatively flat, so it is more an entry-level choice.

Recently launched also suitable for the production of Espresso high-end manual bean grinder HG-ONE, the use of titanium alloy cone grinder, wheel-type shake foal gearbox transmission to the knife head to speed up speed, and can be ground to an average and fine effect, only a very low heat, but the price is also the same as the cone knife electric bean grinder has Fight.

HG-ONE

HG-ONE construction diagram

Bottle ceramic knife grinder manual bean grinder

Bottle ceramic knife grinder manual bean grinder

Manual rotation is used and slingshot is used to adjust the grinding of rough and young, but the grinding degree is generally not too fine, but after this kind of grinding is used, the knife can be washed with water and air-dried, and the ceramic knife has no strange smell. Apart from cleaning and hygiene, the price is also popular, which is now adopted by more people.

There are many different types of electric bean grinders.

Propeller type electric bean grinder

Propeller type electric bean grinder

The propeller blade rotates like a propeller to grind the coffee beans into irregular fragments. Many times after grinding, you will find that there are a lot of fine powder around the blade, but there are large pieces of coffee in the middle. Uneven grinding, the effect is not very ideal, coupled with the constant rotation of the motor repeated grinding to produce heat, so that the coffee aroma volatilization and smell. It is called "bean chopping machine", but the price is generally $300 and 500 yuan.

Propeller blade

Fujika machine Rmur220

Molar type knife grinder electric bean grinder

The molar type is ground with two grinding plates when the upper and lower coffee beans are sandwiched in the middle.

When the disc rotates, the coffee beans are squeezed and ground. Due to the molar design of the grinding disc, the coffee beans are ground evenly and have multiple cutting surfaces. In the filter paper hand or siphon cooking, the flavor will be more, but the grinding degree can only be as thick as white granulated sugar. It is not appropriate to make Espresso. The typical model is the Rmuri 220 of Fujika, which is also known as "Little Fuji". The price is about $3000.

Molar grinding disc is also called "ghost tooth cutter head".

There are also two companies in Taiwan, Yang Family and Youwei, which are usually called Pegasus and Pegasus, with models of 600N and CM300AU respectively. However, the grinding of the two machines is like a parallel cutter head, which can be said to be a variant machine between the molar type and the parallel type, but the grinding effect with home fingers is acceptable. The price is about $800, 000 or so.

Pegasus 600N

Little Eagle CM300AU

Pegasus and Eagle used to be the best partners for Espresso entry with DeLonghi EC-155.

Eureka Mignon

Parallel knife grinding electric bean grinder

The parallel type uses two grinding plates to rotate when the upper and lower coffee beans are sandwiched in the middle, and the coffee beans are squeezed and ground into powder, the principle is similar to our previous stone mill, this way can be ground finer, the speed of the motor is faster, and the heat generated is higher. Suitable for making Espresso. It is generally called Italian bean grinder. The price ranges from $2500 to more than 10000.

Flat Burrs parallel knife sharpening

Mazzer Robur Electronic

Cone knife grinder electric bean grinder

It is also a kind of Italian bean grinder, mostly high-grade commercial grade. The cutter head surface area of the conical cutter head grinder, where coffee beans are ground, is larger than the parallel cutter head, grinding is more average and finer, the speed of the motor is also slower, the heat generation is relatively less, and the effect is the best, but most of them are large and expensive. The price ranges from $7000 to more than 20000.

Conical Burrs taper sharpening knife

"straight out", "electronically controlled quantitative" and "component"

The above nouns often appear on the Italian bean grinder, and some brands and even the same model also produce straight-out or quantifier versions.

Rancilio Rocky Doserless & Doser

"straight out" means that after grinding, the coffee powder falls directly into the powder bowl of the brewing handle, and there is generally an induction system under the outlet. When the brewing handle touches the induction system, the motor starts, and how much more it is ground. This can reduce the waste of coffee beans and reduce the residue of coffee powder in the machine.

When the handle touches the sensor system, the coffee will fall straight to the powder bowl.

"Electronic control quantitative", is a straight out of the enhanced version, the default start-up time to control the amount of powder, can be set to Single Shot with Double Shot and touch start. More precise portions can be made to reduce the waste of coffee beans.

Mazzer electronic control interface, Single Shot and Double Shot and touch control start-up & internal situation

The "distributor" is to drop the ground coffee powder into a container, divide the coffee powder into small portions with a powder grid, and then drop the coffee powder into the powder bowl of the brewing handle with a plaster. The advantage is that it can grind a certain amount in advance, shorten the grinding time and put the excess coffee powder back into the dispenser, thus minimizing the waste of coffee beans. It is suitable for making multiple cups or Cafe in a short time. The disadvantage is that because of the ground powder and the leftover powder, there is often a "smell" of coffee powder, and a large amount of residual powder is left in the channel from the mill to the quantifier.

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