Undecan-4-olide, also known as γ-Undecalactone, is a flavoring ingredient. It is industrially important flavor compounds that are widely distributed in foods, fruits, and beverages and are used in many fruity aromatic foods and cosmetics. It is often used in peach, apricot, pear, maple, coconut, tropical, butterscotch, grenadine and date flavors. It is also a volatile flavor constituent found in low-fat ice cream.