Black Ivory Coffee is a brand of coffee produced by the Black Ivory Coffee Company Ltd in northern Thailand from Arabica coffee beans consumed by elephants and collected from their waste. The taste of Black Ivory coffee is influenced by elephants' digestive enzymes, which breaks down the coffee's protein. "Protein is one of the primary factors for bitterness in coffee. Less protein results in a coffee with less bitterness." The coffee beans are digested within 15 to 70 hours, and are present with various other ingredients in the elephants' stomachs, which imparts specific flavors to the product. In contrast to civets who are omnivores, elephants are herbivores. Herbivores utilize fermentation to help break down cellulose (green leafy matter).