Ultra-pasteurized. Extend freshness. For freshest taste, consume within one week once opened. Store in refrigerator with temperatures between 35 degrees F and 40 degrees F. It is recommended that milk or dairy products be placed on refrigerator shelves and not on the door. Good idea! If you can't use by best if used by date. You can freeze it. Milk will expand when frozen, so be sure to leave room in the container so it won't burst. Thaw in the refrigerator overnight, shake well and use as normal....