2. Wash pig's feet and cut into sections. Cut lotus root into 7-9 cm cubes, and mash garlic and ginger with a kitchen knife.
3. Boil the water in the pot, pour the trotters into the water, cook for another three minutes and then filter out.
4. Pour cooking oil into the pot, wait for one minute, pour pig's trotters, and fry for 5 minutes.
5. Pour all the ingredients into the pressure cooker, and cook on high fire for 15 minutes, and then on low fire for 10 minutes. Just sprinkle some onions when you cook.