As long as your wildbrine products are kept in the fridge with the brine covering all of the solids – the brine is a natural preservative – it’ll be good until at least 1-2 months past the expiration date printed on the package. But even then, they’re still good to go, although the crunch might dull a bit and, since wildbrine is alive and actively fermenting, expect the flavors to continue to deepen as they chill out in your fridge. Just a side note: Make sure and always use a clean spoon when digging into the krauts and kimchis.