Make a paste in a pestle and mortar with the fresh thyme leaves, peppercorns, Himalayan salt and garlic infused oil.
Rub it all over the beef.
Place in the oven at 180ºC for 1.5 hours (give or take, depending on preference). We recommend using a meat thermometer to ensure it’s cooked to your liking.
Remove from the oven, cover with foil and rest for 10 minutes before carving.