Storage & ReheatingThe beef mix and roasted potatoes will both keep in the fridge for up to 4 days, or in the freezer for up to 3 months, stored separately in airtight containers. The melted mozzarella can turn slightly grainy once frozen and thawed, so for the best texture, consider stirring through fresh cheese after reheating rather than freezing it in the sauce. Reheat both components together in the microwave or in a pan over medium heat until piping hot throughout, and add the sour cream, spring onion, and sriracha mayo fresh, just before serving.