Herbs and spices are commonly used because they can make food taste better.

VOA: special.2009.05.19

They tend to stay stable during deep frying and then the palatability goes up and the foods taste better, at least according to the food industry.

它们还能在油炸中保持稳定,这使得食物口味更佳,吃起来更加美味,至少食品业是这样认为的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选