Vinaigrette is a type of sauce or dressing, typically made with oil, vinegar, and seasonings, that is commonly used to add flavor and moisture to salads and other dishes. It is generally light and tangy, with a refreshing, acidic taste that complements the flavors of fresh greens and vegetables. Vinaigrette can be made in a variety of different ways, with various types and ratios of oils and vinegars, and can be customized with different herbs, spices, and other flavorings to suit different tastes and purposes.