What medicine is used to soak frozen pig's feet? Does it look fresh?

Soak with sodium hydroxide (commonly known as caustic soda), hydrogen peroxide (commonly known as hydrogen peroxide) and sodium nitrite. Frozen trotters are soaked in sodium hydroxide (commonly known as caustic soda), hydrogen peroxide (commonly known as hydrogen peroxide) and sodium nitrite. Soak your hair and it will look refreshing. Sodium hydroxide, commonly known as caustic soda, caustic soda and caustic soda, is a strong caustic alkali, which is generally flaky or massive, easily soluble in water (exothermic when dissolved in water) and forms an alkaline solution, deliquescent, and easily absorbs water vapor (deliquescence) and carbon dioxide (deterioration) in the air. Hydrochloric acid can be added to check for deterioration.