Taste sensation is a term used to describe the four basic tastes that humans can detect: SOUR, umami, FLAVOR, and TANG. SOUR is a sharp, acidic taste that is often associated with citrus fruits. Umami is a savory, meaty taste that is found in foods like mushrooms and soy sauce. FLAVOR is a combination of all the tastes, including sweet, salty, SOUR, and bitter. TANG is a tart, acidic taste that is often found in citrus fruits. All of these tastes combine to create a unique and complex taste sensation.