1. First, prepare raw materials, coffee beans, water and sugar (preferably sugar) to replace the cooker of the coffee machine, preferably a self-filtering glass pot. If not, use an ordinary aluminum teapot or even a small cooking pot.

The next step is to grind coffee beans. First, find a clean cloth, preferably drawer 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 beat the coffee beans with a small hammer until you think the coffee beans are almost broken, then twist them with a rolling pin or use other substitutes until the coffee beans are broken into powder.

Before you start cooking, you should know the proportion of materials. 50 grams of coffee powder, with 1 liter of water and 100 grams of sugar, or with some milk or something.

4. If you use a self-filtering glass kettle, you should first boil the water with other appliances, then pour the water into the glass kettle, insert the filter, put it on the heating device (gas stove or electric stove), and add the ground coffee powder in advance. After starting to cook, when you see that the coffee has risen to half, you should switch to low fire and stir while cooking, so that the coffee powder and water phase can be fully melted. After about 3 minutes, remove the glass pot from the heating device and let it filter by itself until the glass pot makes a noise, and the delicious coffee is ready.

If you use an ordinary teapot or a small wok, you should first boil the water, then add the coffee powder, stir while cooking, and then switch to a small fire after stirring evenly, about three minutes, stir while cooking, and cover it after the coffee grounds are precipitated and filtered out.

As for the sugar prepared at the beginning, you should put it in after the coffee is cooked, otherwise it will stick to the bottom of the pot and cause trouble, and so will the milk.