The smooth side of pig intestines is inside.

The pig is slaughtered after the intestines with feces, first of all, to pour out the feces, because the intestines are long and thin, the inside is not good to clean, so we have to turn the intestines over, so that can be cleaned, this process is called "turn the intestines". Pigs alive outside the large intestine will be attached to a lot of fat (small intestine outside the less), the more fat pigs attached to the more fat, after the "intestine", the original fat on the outside to the inside, so buy back the large intestine inside the greasy stuff.

The pig intestine is the pig's internal organs, pig intestine is used to transport and digest food, there is a strong toughness, not as thick as the pig belly, there is a moderate amount of fat, pig intestine, also known as fat intestines, is a common pig offal by-products.

Based on the function of the pig intestine can be divided into large intestine, small intestine and intestinal head, their fat content is different, small intestine is the thinnest, intestinal head is the most fat. Pork intestines taste better when stir-fried, Hunan cuisine generally like to stir-fry practice, eaten while hot is very tasty.