Fats, or triacylglycerols, are the primary form of lipids in food and consist of a glycerol backbone esterified with three fatty acid chains. They serve as energy storage molecules, contribute to texture and mouthfeel in culinary applications, and act as carriers for fat-soluble flavor compounds and vitamins in spices and food matrices. Chemically, they are nonpolar esters with variable chain lengths and saturation levels that determine physical properties like melting point. In food science, fats enhance flavor delivery, provide stability to emulsions, and undergo oxidation or hydrolysis during cooking and storage. Their role in spice chemistry includes solubilizing essential oils and phenolic compounds, improving bioavailability of lipophilic bioactives. Fats are ubiquitous in both plant and animal sources and are critical for sensory attributes in processed foods.