Mix together the marinade ingredients, add the beef, and enough olive oil to coat. Leave the marinade for about 2-8 hours.
Mix together the Chimichurri ingredients and season to taste.
About 30 mins before you’re about to cook, skewer the beef, and leave at room temp.
Preheat a cast iron skillet pan until nice and hot, then add the beef skewers to the hot pan.
Cook in Roccbox for around 6-8 minutes, turning and rotating as required.