The chicken feet have an earthy smell. You should remove it before cooking. When you rinse it, use a knife to remove the small yellow callus on the palm of the chicken claw.
You can marinate chicken feet with beer or vinegar, that makes chicken feed soft and tender.
Step3 is the key to the dish. Make sure every chicken feet is fully fried, so when you boil them, you can make juicy chicken feet. If not fried enough, the skin and meat may be tight and less flavor.