The siphon pot (Syphon), commonly known as the "wind pot" or "siphon type", is a simple and easy-to-use coffee brewing method [1]. It is also one of the most popular coffee brewing methods in coffee shops. . Although the siphon kettle is also known as the "wind-stop type", it has nothing to do with the siphon principle. Instead, it uses water to heat to generate water vapor, which creates pressure and pushes the hot water in the lower sphere to the upper kettle. After the lower kettle cools down, the upper kettle is The water is sucked back. The siphon pot is a special kind of coffee pot. Do you know its principle? PChouse will introduce it next.

The main principle of coffee extraction with a siphon pot is realized through pressure difference. First, the water in the lower cup is heated to boiling, and then the upper cup is inserted, so that the lower cup presents a vacuum state. Since the lower cup and the upper cup The pressure difference causes the hot water to flow up to mix and extract the coffee powder in the upper cup. After the extraction process is completed, the fire source of the lower cup is removed, so that the pressure difference between the lower cup and the upper cup is instantly reduced. The gravity between the two cups will cause the coffee extract to flow back to the lower cup. If you want the coffee extract to flow back faster, you can wipe the lower cup with a wet rag. This will make the pressure difference between the upper and lower cups smaller and the coffee extract to flow back faster.