Looking for the right coffee grinder to meet your needs? With many electric and manual units currently available, choosing one can be challenging. MyFriendsCoffee offers insights and tips that will help you choose the coffee grinder that meets your specific needs.
General criteria for choosing coffee grinders
When deciding which grinder to choose, there are a few questions to answer:
- How often coffee is made in the house, more precisely, how many cups are brewed per day?
- What kind of drink do households prefer: Turkish, espresso or Americano – the required degree of grinding depends on this?
- What type of coffeemaker do you need to prepare ground coffee?
If 25–35 grams (0.8-ounces to 1.2-ounces) of ground coffee is a suitable amount for your morning coffee (for 3 cups to 4 cups), a coffee grinder with a small capacity for beans is suitable.
For preparing coffee in a cezve — a long-handled pot used to make Turkish coffee — an inexpensive coffee grinder is suitable without special requirements for uniformity of particle size. In this case, you can purchase a rotary grinder. If the house has a drip, geyser type electric coffee maker, or a semi-automatic coffee machine, you will need a millstone type coffee grinder, either manual or electric.
Types of electric coffee grinders
- Rotary (knife)
How to choose a rotary (knife) coffee grinder
Rotary or knife grinders are called electric coffee grinders with one capacity, serving both whole beans and ground product. Its volume, in different models, is designed for an amount of coffee from 40-grams to 120-grams (1.4-ounces to 4.2-ounces). A rotating knife is installed at the bottom of the bowl: in some models it is curved, but double is preferable. The degree of grinding depends only on the duration of operation of the device, and the uniformity of the particle size depends on the shape of the knife.
The flat single knife grinds only some part of the grain. To ensure a more even grind, you have to shake the device periodically. The double-curved knife mixes the grain in volume and gets the job done faster.
The power of rotary models varies from 110-watts to 270-watts. It is not worth striving for maximum performance, as overheating is possible, due to which the ground coffee will acquire a bitter taste. The optimal power indicator is 180-watts.
How to choose an electric burr coffee grinder
Electric burr grinders differ from rotary (knife) grinders in the principle of operation. Such devices are equipped with a receiving hopper for whole grains and a container for ground coffee. Grains poured into the receiving hopper fall between the millstones where they are crushed and ground into powder.
Flat millstones are installed parallel to each other with an adjustable gap. On the planes in contact with each other, a special notch is applied. The millstones rotate at high speed and grind the grains to form grains smaller than the distance between the working planes. The ground coffee is poured down into a plastic container.
Conical millstones are two cones with a toothed surface, one of which is inserted inside the other. The outer cone is stationary, while the inner one rotates. The beans move downward and the coffee is ground to a predetermined particle size.
The material from which the millstones are made has a great influence on the taste of the drink and the durability of the coffee grinder.
- Stainless hardened steel: millstones made of it serve for a long time, but less resistant to abrasion than cast iron. It is not recommended to wash metal millstones with water, they are subject to corrosion;
- Titanium coated hardened steel: the millstones made of this material will last longer and are more abrasion-resistant. But models with such millstones are much more expensive than uncoated ones;
- Ceramic: a durable and environmentally friendly material, the resource of which is designed for grinding up to 1000 kg (more than 2,200 pounds) of grains. An alloy of ceramics with corundum is ideal, it is very rare on the market. The material is not afraid of rust, does not absorb any foreign odors.
Electric burr coffee grinders are more productive and the grinding quality is higher than that of rotary units, allowing consumers to set a certain particle size for ground coffee, suitable for preparing drinks according to a particular recipe.
The presence of a timer, a fineness regulator and a dispenser allows you to leave the device turned on. Whereas while the rotary coffee grinder is running, you need to hold the power button down and monitor the degree of grinding.
How to choose a manual coffee grinder
The principle of operation of this type of coffee grinder is similar to that of electric millstones. Millstones can be made of steel, ceramics and cast iron. Cast iron millstones are durable and inexpensive and can process more than 1,000 pounds of coffee beans.
It takes more time to grind beans than when using an electric coffee grinder, but the possibility of overheating the coffee and the appearance of an unpleasant aftertaste is excluded. True connoisseurs of coffee prefer only hand-grinding.