People who regularly control their food consumption, direct touch triggers an enhanced sensory response, making food more desirable and appealing.
Food historians generally agree the genesis of yogurt and other fermented milk products was discovered accidentally by Neolithic peoples living in Central Asia. These foods occured naturally due to local climate and primative storage methods. About milk, sour milk & sour cream. Yogurt has long been associated with good health and long life. Yogurt became popular in America after WWII.