Depending on your refrigerator’s temperature and how long the jar was out and open on the kitchen counter, whether any cross contamination occurred, you can store Cookwell & Company products for 3-4 weeks. This time relates directly to how many times you open your refrigerator door, your refrigerator’s efficiency, etc. There is definitely no simple answer. But, if you love Cookwell products as much as we do, you'll probably finish the jar before you have to worry.