Pulling sweet potatoes can be fried in pig or salad oil. Peel the sweet potato and cut it into hob pieces, pour lard into the pot, heat it to 80%
Pulling sweet potatoes can be fried in pig or salad oil. Peel the sweet potato and cut it into hob pieces, pour lard into the pot, heat it to 80% heat, pour the sweet potato pieces, and turn to medium heat to fry until the appearance is hard. Lard, also known as meat oil or lard in China, is extracted from pork. It is an edible oil, which is yellowish translucent liquid in its initial state and white or yellowish solid at room temperature. Lard is mainly composed of saturated higher fatty acid glycerides and unsaturated higher fatty acid glycerides, among which saturated higher fatty acid glycerides have a high content. Among them, unsaturated higher fatty acid glycerides contain carbon-carbon double bonds, so they can discolor bromine water and acidic potassium permanganate solution.