Sweetness is one of the sensory properties, relating to the extent to which a product tastes sweet. It is perceived by taste receptors on the tongue that respond to sugars, polyols, certain amino acids, and high-intensity sweeteners, and it is modulated by temperature, acidity, aroma, and texture. Measuring it combines sensory panels, which judge perceived intensity and quality, with instrumental analysis of sweetener concentrations. Understanding sweetness is central to sugar reduction: replacing sucrose means matching not just its intensity but its timing, mouthfeel, and clean finish.