Basic knowledge of coffee to understand the principle of making various utensils

■ filter / hand pulping (Filter Coffee): use 1.5 ounces of lightly roasted and roughly ground coffee powder into filter paper (or flannel), slowly pour boiling water into the center of the coffee powder and extend around, then return to the center, and then melt the coffee powder in boiling water and drip into the pot. The consumption of each cup of coffee is about 810g, and the boiling water is 85-90 ℃.

■ mocha pot (Moka Maker): a kind of distilled coffee brewed from the mocha pot with a steady concentration and aroma. The mocha pot is divided into two parts. The water is boiled in the lower half of the pot until it boils. When the water boils, due to the pressure of the steam, the boiling water rises through a filter containing coffee powder and reaches the upper half of the pot. When the coffee starts to flow to the top half of the pot, the fire needs to be turned down, because the high temperature will make the coffee scorch and destroy its original flavor. The common Japanese plug cooking method also uses the same principle of mocha.

■ espresso machine (Espresso Machine): coffee drinks are extremely unstable liquids that can change their characteristics and taste at once. This is the main reason why the espresso machine (Espresso Machine) was invented. The espresso machine can continuously extract several cups of coffee, and the high pressure in the brewing process can emulsify and melt the oil and gum in the coffee beans, and the essence of the coffee beans can be completely extracted by pressure, making the brewed coffee more concentrated and more mellow in taste and flavor.

■ siphon pot (Siphon): first put the coffee powder into the upper funnel, then add water into the kettle, then put the funnel mouth tightly into the kettle, boil the water, when the boiling water goes deep into the funnel, stir for about 40 minutes and 60 seconds, then turn off the alcohol lamp. When the coffee falls back into the pot, you can remove the funnel and pour out the coffee to drink.

■ pressure pot (French press): the French pressure method requires the use of a glass or porcelain vessel and a screen. In order to make the taste better, you'd better heat the vessel, put in the right amount of coffee powder after rough grinding, soak in hot water just below the boiling point for 5 minutes, stir slowly, and then enjoy the fun. The automatic drip filter can produce moderate coffee without oil stains and sediments. Please choose a drip brewer with a minimum of 1000 watts. The coffee pot is a good coffee maker. In addition, remember to grind coffee beans according to the shape of the filter; the tapered filter is suitable for moderately ground coffee beans, and the flat-bottom transition is suitable for finely ground coffee beans. The mocha pot is pressurized to make drip coffee, add moderately ground coffee to the metal coffee vessel, do not put too much water, do not exceed the height of the valve shown in the picture, then tighten the lid and heat it over warm heat. You can enjoy it when the top of the container is filled with coffee.

■ American drip coffee pot (electric coffee maker): electric coffee pot, simple structure, a device for heating hot water, and then hot water is directly dripped through the strainer containing coffee. Because of the fast flow rate, light taste and high water temperature, it is easy to cause excessive coffee extraction.

■ Naples pot (Napoletana): also a kind of filter coffee: put the moderately ground coffee powder (5g / cup) into the filter in the pot, close the lid of the filter and place it in the water cooker. After the water is boiling, remove the kettle and turn it upside down. 100 ℃ of boiling water permeates the coffee powder in the filter and drips into the cup. The contact time between boiling water and coffee powder is between 2-4 minutes. Napoletana coffee will not be very thick, full and round and delicious.

■ Evellick brewing (Turkish Coffee): the coffee is made with a concentrated, high concentration and a little aroma. The method is to heat the copper coffee pot, put an appropriate amount (in the amount of one teaspoon per cup) into the pot and grind the coffee powder and sugar very finely, then brew it in boiling water for about 1 minute, wait for it to precipitate before drinking.