This yogurt ranch is based on a recipe from Saveur, and the reason I keep powdered onion and garlic on hand. They're convenient and they blend in quickly for the best smoothness. It's made with 50/50 mayo-plain yogurt and yields 1 cup. Double--or triple-this recipe for a party. Store in the refrigerator for up to 1 month.
Combine all of the ingredients in a mixing bowl until smooth and well blended. Refrigerate for at least 1 hour to let the flavors marry before serving and store in the refrigerator for up to 1 month.