2. A bottle of wild pepper.

3. Cook the chicken feet and let them cool (don't forget to cut off the chicken nails before cooking them). Mix the above three points together, put them in a special pickle jar and seal them for a week.

here's a special explanation for this pickle water: put boiled water, pepper, salt (preferably special pickle salt, if not, it doesn't matter, you can use ordinary salt), star anise, cinnamon, a little sugar and a little white wine into the pickle jar.