Where is fat chemically and mechanically digested?

Fat is chemically digested primarily in the small intestine, where bile salts from the liver emulsify fats, allowing pancreatic lipase to break them down into fatty acids and glycerol. Mechanically, fat is initially broken down in the mouth through mastication (chewing) and further emulsified in the stomach by churning. The majority of fat digestion occurs in the small intestine, where the emulsification process enhances enzymatic action.