Add the bay leaves, peppercorns and veg to the pot and cover with the lid, leaving a slight gap to allow steam to escape. Turn the heat down to low and simmer for 2 hrs 30 mins. If the beef is larger or smaller than 1.3kg, you may need to adjust this time. Remove from the heat and leave the beef to cool in the liquid for 30 mins before slicing and serving warm. Or, to serve cold in sandwiches, cool fully in the liquid for a few hours, then transfer to a container in the fridge to slice and serve as needed. For best results, slice using a serrated knife to ensure the thinnest slices possible.