1. Bake the bought pig's trotters with a small fire of a gas stove until they turn white and slightly yellow, then soak them in light alkali for 15 minutes, and then brush them with a steel wire ball, so as to remove a little odor and remove hair at the same time, and then blanch them with water twice, which is helpful to deodorize them. When blanching, ginger, pepper and barley can be added.
2. Burn the treated hoof and cut it into pieces, put it in a pot, add water to boil it, and then fish it out until all the blood on the hoof comes out. You can wash the oil on it with warm water, not cold water, otherwise the hoof will not be easy to stew;
3. Boil another pot of water. After the water is hot, add a few slices of ginger and a few grains of pepper. You can add a whole walnut, which can be stewed quickly and has the effect of removing the odor. Then add the washed hoof, simmer for one hour on low heat for ten minutes after the fire is boiled. Finally, the trotters have been boiled and the odor has been removed.