Hello, I am very happy to buy a beautifully made and designed product. Although the price is not cheap, it is more worth cherishing. Let me talk about my experience of using it, 1. In addition to mastering the appropriate grinding fineness for the first time, I don’t know how to control the appropriate firepower (gas). The first trial brewing time was about 10 minutes before the coffee liquid appeared. 2. I don’t know how tightly the handle needs to be turned. If it is too tight, it will not be easy to turn it away after cooling. 3. I am switching to an electric stove and I don’t know what the recommended wattage should be. I am still trying to find out. Small firepower will cause the water to boil. Not boiling. Overall, it is not too difficult to operate and is worth using every day.