About 1-2 weeks or possibly longer, if stored in the refrigerator. If not kept in the fridge, figure on less than 1 week. If you want to keep it longer, store it in the freezer.
Looking for the same answer. Rachel Ray's product says use within 14 days after opening. I know that you can freeze homemade stock in ice cube trays for later use, anyone know if you can do the same...