1, rinse the trotters with water, put them into an electric pressure cooker, and press 15 for about 20 minutes. The water must be full. This step is to remove blood from pig's trotters. You can also consider putting some vinegar and ginger in the water to remove the odor. When cooking in this step, you will find a layer of foam on the water. Remove water and foam, leaving pig's trotters.

2. When the electric pressure cooker is working, prepare all kinds of seasonings. Cut ginger and garlic, and mix vinegar, star anise and cinnamon.

3, oil pan, sugar, stir fry quickly. Put the pig's trotters in the pot and quickly color them so that each pig's trotters turn bright red. Add ginger and garlic and stir-fry together after coloring.

4. Put the colored trotters into an electric pressure cooker and add seasoning. Add it to the pot, and the water has hardly passed the pig's trotters. Don't forget to add salt. Press the electric pressure cooker for about 40 minutes.

Don't turn on the pressure cooker after the trotters are pressed. Wait an hour or so for the trotters to simmer again.

6. Take out the trotters and put them in the pot to collect the juice. This process takes about ten minutes. Add potatoes and pig's trotters and stew together.