Flavorful relish or dressing or topping served as an accompaniment to food.
Food preparation that usually is liquid or soft, taken as a relish. Nutritionally sauces add little to the diet unless used in large quantities. Sugar is a major ingredient in chutney, French dressing, and tomato ketchup. Other sauces are white sauce and salad cream. Mayonnaise has a high fat content.

ETYM Cf. French saucer.
1. To add zest or flavor to, make more interesting.
2. To behave saucy or impudently towards.
3. To dress with a relish, for example, as of food.