You can store both ratatouille or ciambotta in the fridge or the freezer! Ratatouille freezes and reheats really well, and tastes even better the next day. To Store In The Fridge: Allow the stew to cool completely before transferring it to an airtight container. Store in the refrigerator. It will keep for 4-5 days.  To Freeze: Cool completely, then transfer to a freezer safe container, making sure to remove any excess air. Label with contents and date. It will keep for 2-3 months in the freezer. To Reheat: When ready to reheat, you can warm in the microwave in a microwave safe bowl with a paper towel overtop. Or transfer to a pot and bring to a simmer on low heat. If reheating from frozen, allow to thaw in the refrigerator overnight, then transfer to a pot to warm all the way through.