how long store sauerkraut
Storing in the Refrigerator. Scoop sauerkraut into jars or freezer bags. Close the jar or bag tightly so no air can enter. Label the jar or bag with the date. Sauerkraut can stay good for up to three months in the refrigerator. Dating the bag will help you remember its age.
If it's store bought and not a live culture, maybe a week, or two weeks. If it's a proper fermented live sauerkraut, it needs to start at room temperature, for up to a week, then it will last for months in the fridge. Many people throw sauerkraut or pickles away when a white scum forms on top of the liquid.