Cut the tenderloin into 1cm thick medallions and put them into a large freezer bag or a mixing bowl.
Combine the rest of the ingredients (except the salt) in a small bowl then pour over the pork.
Massage the sauce into the meat, making sure that each piece gets covered well.
Marinate for at least an hour (if more, put the bag/bowl in the fridge).
When you’re ready to cook, take the pork out of the fridge and seasons with salt.
Heat your BBQ, grill or griddle pan and cook the medallions for 3-5 minutes on each side until charred.
Serve warm with condiments of your choice.