1 whole beef fillet
125ml thyme leaves
4 cloves of garlic
10ml onion salt or sea salt
60ml vegetable oil
30ml red wine vinegar
Blitz together the thyme, garlic, onion salt, vegetable oil and vinegar with a stick blender. You are looking for a very thick paste. Set aside.
Dry the beef fillet and tie it up.
Rub the herb paste over the fillet.
Cook on a rotisserie over medium-warm coals for 1 hour 15 minutes.
Cover the cooked fillet with aluminium foil and leave to rest for 15 minutes.
Slice into portions and serve.