Grab a sharp knife and cut a super-shallow cross-hatch pattern into each side of the steaks, and then season them with salt. Skewer them as shown in the video so you have two steaks per skewer.

Preheat the oven to 180C/160C Fan/Gas 4. Use a sharp knife to score both sides of each celeriac round in a cross-hatch pattern. Transfer the slices to a roasting tin in an even layer and season ...