1. First prepare the raw materials: coffee beans, water and sugar. Do not use the cooker of the coffee machine. It is best to use a self-filtering glass pot, an ordinary aluminum teapot or even a small cooking pot.

2. Next, grind the coffee beans: first find a clean cloth, then sew the drawer cloth into a small pocket, put the coffee beans in, tie the bag mouth tightly with a rubber band, then tamp the coffee beans with a small hammer and twist them with a rolling pin until the coffee beans are broken into powder;

3. Before you start cooking, you should also grasp the proportion of materials: 50 grams of coffee powder, plus 1 liter of water and 100 grams of sugar;

4. If you use a self-filtering glass pot, you should use other utensils to boil water first. After the water is boiled, pour it into the glass pot, insert the filter screen, put it on the heating device, and then add the ground coffee powder in advance;

5. After starting to cook, when you see that the coffee has risen to half, switch to low heat and stir while cooking. After about 3 minutes, remove the glass jar from the heating device and wait for it to filter itself until the glass jar makes noise. Remove the filter and the delicious coffee will be cooked.