Store covered in the refrigerator for up to 1 week.To lower calories and fat, I have used light mayonnaise and reduced fat sour cream to make this ranch. Still delicious!For more robust flavor, try adding minced garlic, dried minced onion and dried dill weed to the recipe. I have made it either way and all are super tasty.Nutrition information is based on using full fat mayonnaise and sour cream.