Angry Orchard cider, once opened, typically stays fresh for about three to five days when stored properly in the refrigerator. The carbonation and flavor will begin to diminish after opening, so it is best to consume it within this time frame for an optimal taste experience. To extend the freshness, it is important to keep the cider sealed in its original bottle or can with a tight closure. This helps to limit exposure to air, which can lead to oxidation and affect the quality of the cider. If you notice any changes in taste or aroma after a few days, it may be best to discard it. For more detailed information on storage and freshness, it may be helpful to check the official Angry Orchard website.