1. freshly ground coffee;
This is also divided into many kinds of cooking methods, including siphon, Italian and Turkish, and the more professional one belongs to siphon.
First, put boiling hot water into the glass ball at the lower level, and the amount of hot water depends on the size of the coffee cup used. On average, a cup of coffee needs about140 ~150c. C., then fix the upper pot with the filter cloth on the base, pour in the ground coffee bean powder, and heat the water in the pot by alcohol lamp or other heat sources. After the water boils, the steam pressure forces the water to rise through the pipe. At this time, the coffee bean powder in the upper pot contacts with the hot water, and it is mixed into a muddy state by stirring, and the four flavors and one fragrance of coffee are dissolved out. Let the coffee be fully soaked with water and then put out the fire source. When the air in the lower ball is cooled, it will form a vacuum state, and the coffee liquid will be sucked back into the base through the filter cloth. At this time, the coffee will be poured into the preheated cup, and you can indulge in its unique fragrance and sip its sweet and bitter taste. Cleaning and preservation of filter cloth. The cleaning and preservation of the filter cloth is a troublesome job when the siphoned coffee is brewed. After it is used for the first time, the cloth changes from white to brown, accumulating fat and protein that cannot be completely removed. When it comes into contact with the air, it will produce an offensive odor, which will seriously affect the delicious taste of coffee. It is a good idea for someone to keep this used filter cloth in a glass of clean water, but pay attention to changing the clean water frequently. Here is an exciting good news for users: at present, disposable filter paper can replace the traditional filter cloth, which has the advantages of hygiene, convenience and cheapness, and is a great boon for those who like siphon brewing.
2. Instant coffee; (Everyone knows this, such as Nestle)