how long does heavy whipping cream last once open?
Answer: Heavy Cream Has a Shelf Life Of Up To A Month. According to the USDA, heavy cream can be stored in the refrigerator (opened or unopened) for up to a month. This assumes that it has been kept at a constant refrigerator temperature and not left out on the counter for stretches of time. Discard any cream with mold or an off odor. When in doubt, throw it out.