A Lot Of Salad Dressings Don’t Need To Be In The Fridge
While salad dressings that contain dairy products like ranch dressing or blue cheese dressing do need to be kept in the fridge, many oil-based vinaigrettes can be kept out of the cold.
Neither vinegar or oil require refrigeration. As we saw with olive oil, some oils can actually harden when kept at cool temperatures. You can even make your own vinaigrette and store that at room temperature as well. Vinaigrette is known to be healthier for you than dairy-based dressings anyway. Note: if your vinaigrette contains garlic or lemon juice it’s best to store it in the fridge (and used within three days).