Once opened, refrigerate butter in its original package in the coldest part of the refrigerator, not in the refrigerator door. To further protect stick butter, store in a resealable plastic food bag.
The FlavorProtect® Wrapper, found on Land O Lakes® Butter sticks, is specially designed to keep the sweet cream taste you love in and other flavors out. For further protection, store butter away from foods with strong odors, such as onions, garlic, or fresh fruit.