– N-Acetyl-L-tyrosine ethyl ester (ATEE) is a compound frequently used as a food flavoring agent and supplement. It is an ester of tyrosine, an amino acid found in various proteins. ATEE imparts sweetness, nuttiness, and a caramel-like flavor, enhancing the taste of baked goods, dairy products, and beverages. It also offers potential health benefits, such as antioxidant properties and the ability to improve cognitive function.