Your oven unit is more than just a cake-baking, potato-roasting, cheese-grilling workhorse. Open the door, fiddle with the temperature and you also have a yoghurt chamber and sterilising cabinet in your kitchen. And if you’ve been tempted to invest in an air fryer or dehydrator, save yourself the trouble – your oven can do many of the same things. From everyday hacks to long-form cooking projects, these are the lesser-known things you can do with your oven and grill.