What is kokumi
Kokumi, a newly minted taste concept that has been described as a "taste enhancer" that magnifies and lengthens five basic tastes, such as sweet, sour, salt, bitter and umami. Words that express the kokumi idea include continuity, mouthfulness, heartiness and thickness. Kokumi is believed to be involved in the sensation of mouth-coating, that satisfying (and hard to replicate) experience of butter, fats, and emulsions coating the tongue and mouth.
Although associated with taste, in many ways, kokumi is more of a texture. It can boost the mouth-coating sensation from fat-containing food materials such as a dairy emulsion. It can increase the roundness of a flavor, much like salt does traditionally, and amplify sweetness in reduced-sugar products.