You can store your tahini date truffles in an airtight container in the fridge for up to two weeks. However they are best eaten within a few days of being made. They are best eaten at room temperature, so remove them from the fridge around 30 minutes before you plan to serve them. You can also freeze them for up to 3 months. Place them in a single layer on a baking sheet to freeze, then transfer to an airtight container or zip lock bag. Allow to thaw and come up to room temperature before serving.