BBQ Worcestershire fillet steak

This recipe has been adopted from Jamie Oliver and makes use of Worcestershire sauce to add a real punch to a fabulous fillet steak.

First, marinate the fillet. Pick and finely chop the rosemary and add to a large sandwich bag with the mustard and Worcestershire sauce.
Add the steak to the bag, seal it and massage the flavours into the meat. Pop it in the fridge for a few hours or over night.
About 1.5 hours before your ready to cook remove the beef from the fridge and allow to come back up to room temperature. Preheat your barbecue and place some knobs of butter in a bowl of cold water and take it out to the barbecue.
Take the fillet out of the bag and pat dry with kitchen paper. Rub it over with olive oil and put it on the hottest part of the grill to give it some colour. Turn it every minute or so and rub with chilled knobs of butter as it cooks, 8-10 minutes.
Once it looks good move to a cooler part of the grill for a additional 4-5 minutes or until cooked to your liking.
When your happy with it, remove it from the grill and let it rest for 8-10minutes. Slice, add extra butter and olive oil so it’s nice and glossy. Serve with extra Worcestershire sauce for drizzling.