Because normal jams have a lot of sugar, their shelf life is very long, even after they've been opened. There’s no added sugars in our jam, only naturally occurring fruit sugars. Which means it’s more susceptible to things like mold. So once you’ve opened the jar, please store it in the fridge. As long as you always use clean spoons or knives to dig in, our Fruit Jam will stay fresh for 2-3 weeks.