Apparently, according to studies, the more we consume a variety of different flavors and we tend to want to continue eating and therefore consume a larger quantity of food.

Consumption of food stimulates the production of neuropeptides. Eating foods rich in sugars and fat, stimulates greater quantity of certain neuropeptide Y, a hormone involved in the sensation of hunger. Over this hormone is produced, the greater the sensation of hunger. Studies suggest that when combining many different flavors in one meal, the body produces more neuropeptide Y (NPY) and harder to feel the sensation of satiety. Result: you eat more!