2, choose coffee beans: good coffee beans are uniform in color and size, with shiny surface, aroma and no odor.

3. Grind the coffee beans. The finer the grinding, the longer the extraction time, the stronger the taste. On the contrary, the thicker the time, the lighter the taste.

4. Making black coffee: pour the ground coffee powder on the wetted coffee filter paper, moisten the coffee powder with 96℃ water, and then pour the water for two or three times to get black coffee.

5, coke syrup: sugar is cooked to caramel color with a small fire, you can't stir when cooking, and you can turn off the fire when it turns yellow.

6. Note: Don't use too much water, put sugar first, and don't disperse the sugar with water.

7. Add a spoonful of coke syrup to the coffee cup, pour in black coffee, stir well, heat the milk until it is warm, use a foaming machine to make milk bubbles, remove and spread them all over the coffee, put a spoonful of caramel into a piping bag, and squeeze patterns on the milk bubbles.