Grind size can be the real difference in a tasty or an unpleasant, biter cup of coffee. You can learn why grind size matters and the setting you should use for your coffee. Hereunder are the types of grind size you need to be familiar with.
Why Coffee Grind Size Matters
When it deals with grind size, there are three main factors which make huge difference, which include contact time, extraction rate, and flow rate. To simply put it:
* The extraction rate of grounds increases with larger surface area.
* The higher the extraction rate, the less contact time is required
* To enhance surface area, finer coffee grind is needed.
* A finer grind can decrease the flow rate of water, which increases the contact time.
Here are the types of coffee grinds you need to know
# Espresso is brewed through the use of pressure to force water through the compacted coffee grounds. The contact time is so short, needing an extra fine grind size.
# Turkish coffee needs extra fine grind size, which is similar to that of the powdered sugar.
# The Aero Press is another popular single-cup manual coffee maker. It is similar to French press in use and design, though some users have come up with some laundry list of ways to brew. The recommended grind size is between fine and medium, which depends on the steep time.
# Siphon brewers use some pressure to force water right into a chamber which holds the coffee grounds. Once the steep has been done, heat is removed, which will create a vacuum in the lower chamber and then pull the water through a filter. This particular method needs medium-fine grind size.
# A Stovetop Espresso maker or a coffee maker which uses steam pressure to make water move upwards through the filter basket which is full of coffee grounds. The contact time is so short, yet the pressure (about 1.5 bar) is a bit higher than the typical manual brewer at homes. It needs medium grind size.
# Single-cup coffee maker, such as Verismo or Keurig machine, is a drip brewer technique, which is similar to the commercial drip brewers present in cafes. The contact time is quite low, which means that it calls for medium to fine grind size, compared to that of table salt you use.
# Drip coffee is what you get from coffee shop or café. It is made in large batches and the contact time is dictated by small hold right in the bottom of the brewing basket, so recommended grind size is various between medium-coarse to medium.
# The French press is immersion brewer. Water is added to coffee grounds and enabled steep for some minutes prior to straining out the grounds. This particular method needs coarse grinding setting.
# Cold Brew, different from brewing methods, is done at or slightly below room temperature and takes about 12 and 72 hours. Because of the low temperature, the extraction rate is slow, regardless of the grind size. Coarse or extra coarse grind size is highly recommended, since it is easier to filter. A finer grind size will work really well, yet can cause the final product to appear bit cloudy.