Theo Michaels served up the ultimate mushroom stack with King oyster mushrooms, peppercorn sauce and tempura onion rings on Steph’s Packed Lunch.

The ingredients for the onion rings are: 1 onion, peeled and cut into thin rings, 100g cornflour, 75g plain flour, 250ml sparkling water and 250ml vegetable oil, for frying.

For the mushroom steak: Splash olive oil, 4 sprigs fresh rosemary, left whole, 2 cloves garlic, peeled and left whole, 8 King Oyster mushrooms, sliced 1 inch thick lengthways and scored crisscross on both sides and 40g unsalted butter.

For the peppercorn sauce: Mushroom offcuts, diced, 80ml brandy/cognac, 200ml vegetable or beef stock, 120ml double cream and 2tsp freshly crushed peppercorns (black for hot or green/red for a milder heat).

To serve: Mashed potato and Steamed green beans or side salad.

See recipes by Theo in his book titled: Orexi!: Feasting at the modern Greek table available from Amazon now.