1 - STEP 1 Rub the garlic over the steaks then put in a sandwich bag and tip in the olive oil, sherry vinegar and parsley stalks.

2 - Smoosh everything together, then use a rolling pin to bash the steaks a few times.

3 - Leave for 1-2 hours.

4 - STEP 2 To make the sauce, put all the ingredients into a blender with 1 tbsp water and whizz until as smooth as possible.

5 - This will make more than you’ll need for the recipe but will keep for a week in an airtight jar.