Tips for steaming coffee: \x0d\ 1. In fact, the distance between the steam nozzle and the milk surface is not necessarily. Not deep or shallow. If you go deep, you will only heat the milk. Shallow will have a big bubble. \x0d\ 2, how to rotate, different people have different habits. The video will have instructions. \x0d\ 3。 It is better to whip milk at low temperature. At room temperature, if the steam nozzle of the machine is fierce, it will be very hot before it is finished. When the milk bubble hits 60 degrees, touch the stainless steel milk cylinder. If you feel a little hot, you can turn off the gas tap. \x0d\ Supplement: \x0d\ Coffee can promote metabolic function and activate digestive organs, which has a great effect on constipation. Coffee can increase high-density cholesterol, accelerate the metabolism of bad cholesterol, reduce coronary atherosclerosis and reduce the probability of stroke. Drinking a cup of black coffee after a meal can effectively whiten the skin. Black coffee can also promote cardiovascular circulation. People with low blood pressure can get better by drinking a cup of black coffee every day. In the process of brewing coffee at high temperature, it will also produce an antioxidant compound, which is helpful for anti-cancer, anti-aging and even prevention of cardiovascular diseases, and can be comparable to fruits and vegetables.