2, no bloodshot is bitter intestines. In the latter part of the pig's small intestine, bitter sausage is also a common pig viscera non-staple food. The pig's bitter intestine is the back of the pig's small intestine, because the small intestine is the main place for digestion and absorption, which contains bile secreted by the gallbladder, pancreatic juice and intestinal juice secreted by the pancreas. The bile salt in the bile is bitter, so it is commonly called "bitter intestine".