Dashi soup stock can be stored in 2 ways: 1 - Pour it in a jug/container and keep it in the chiller. It can last up to 5 days. 2 - Pour it into ice cub trays and keep it in the freezer. It can last up to a month. Tip: Cook a huge batch of soup stock concentrate at one go and freeze it in cubes for easy usage! (i.e. vege stir fry, soup stock base)