What is a key ingredient in the ranch dressing?

Buttermilk serves as the key ingredient in ranch dressing, providing a creamy texture and a tangy flavor that is characteristic of this popular condiment. Traditionally, ranch dressing is made by combining buttermilk with mayonnaise and a blend of herbs and seasonings, such as garlic, onion, and dill. The acidity of the buttermilk not only enhances the flavor but also helps to balance the richness of the mayonnaise, creating a harmonious dressing that can be used in a variety of dishes, from salads to dips.

While olive oil, vinegar, and yogurt may be ingredients in different salad dressings or variations of ranch, they do not capture the essence of traditional ranch dressing the same way buttermilk does. Olive oil is commonly associated with vinaigrettes, vinegar contributes acidity to various dressings but is not a primary flavor in ranch, and yogurt can be used as a healthier alternative but is not the fundamental base for classic ranch dressing.