Vegetarian sausage is the small intestine of the pig.

Vegetarian sausage is a famous traditional Chinese dish from Guangdong and Hong Kong, with pork and pig's small intestines as the main ingredients and cardamom, cloves, cinnamon, sand nuts and dahuric dahurica as the supplementary ingredients, which belongs to Cantonese cuisine. This dish is rich in five flavors, refreshing and non-greasy, and is easy to preserve after smoking.

Part of the animal's absorption and reserve of nutrients within the organ, because of the fat, eaten somewhat powdery texture, while the shape of the intestines, hence the name. Further explanation is that the small intestine of the pig, and is the front part of the small intestine, refers to the next section of the stomach is called powdered intestines, and the back part of the small intestine is called small intestine.

Expanded:

Vermicelli is a food product from Guangdong and Hong Kong, China. To have a tasty vermicelli, the pig must be fasted before slaughter, this section of intestine will have digestive juices, etc., so it does not need to be turned out and washed when cooked, while the latter section of intestine must be turned upside down and washed as a whole.

Vegetarian sausage before the sale, the boss of the sale of pork if not organized in advance, it is likely to eat out of the intestines, that is to say, there are large roundworms in the vermicelli, which is commonly known as the "bitter intestines".

When we talk about vermicelli, we're talking about pig vermicelli. Though there is also vermicelli from cows, it is seldom eaten because of its poor texture. Such a later Cantonese name for disdainful men's is generally used for young people.

Baidu Encyclopedia - Vermicelli