Tripe

Tripe is a type of edible offal made from the stomach of various domestic animals . Beef tripe is typically made from the first three of a cow's four stomach chambers, the rumen (blanket/flat/smooth tripe), the reticulum (honeycomb and pocket tripe), and the omasum (book/bible/leaf tripe). Abomasum (reed) tripe is also seen, but with much less frequency, owing to its glandular tissue content. Sheep and pork tripe are also produced.

Fresh tripe, which includes bits of the stomach's last content, smells very unappetizing to people but is a favorite of many dogs and other carnivores. For consumption by humans, tripe must be washed and meticulously cleaned. "Green tripe" refers to unwashed tripe, not suitable for humans but often used in dog food. Green tripe is so called because of its high chlorophyll content from undigested grass, however it is more often brown or grey in colour.