The most expensive coffee in the world comes from the most strange source: the anus of the common palm civet. Yes, you read it right, the highest-priced brew are actually from the poop of these weasel-like animals endemic to Southeast Asian countries like the Philippines and Indonesia.
These creatures feast on only the finest ripe coffee berries in the forest. During the digestion process, proteolytic enzymes seep into the beans, making shorter peptides and more free amino acids. Apparently, the digestion process adds a unique flavor to the beans, removing the bitter flavor.