Other items people can use for this are ice blocks or bags with water, the expert recommended.
He said: “If you do not have enough food inside the freezer to keep it full, using things such as ziplock bags filled with water, ice blocks or even just bags of ice can help prevent warmer air from entering. These items are cheap and effective.”
Sam continued: “Foods you stock up your freezer with can help lower the costs of running it.
“By organising your freezer space, using more frozen products, and freezing leftover fresh food where possible, we can reduce our food waste and save money.