Barbecued sirloin with chimichurri sauce

Ingredients

1 ½ cups	Flat leaf (Italian) parsley
3	Garlic cloves
¾ cup	Fresh coriander
¾ cup	Olive oil
2	Lemons, or enough for 1/4 cup of juice
1 tsp	Chilli flakes, more if liked
½ tsp	Caster sugar
1 tsp	Ground cumin
1 tsp	Salt
1 ½ kgs	Beef sirloin, weight approx. (Main)
2 Tbsp	Oil
1 to taste	Salt & freshly ground pepper

Directions

1. To make the sauce, either chop the herbs and garlic finely, then add the other ingredients and combine to make a sauce, or put all ingredients in a food processor and blend until combined.
2. Rub the sirloin with the oil, and season generously. Preheat the barbecue and, when hot, place on the sirloin, cover and let cook for 15 minutes.
3. Uncover and turn over, then spoon some chimichurri sauce over the meat, replace the cover and cook for a further 20 to 25 minutes for rare.
4. Let the meat rest uncovered for 15 minutes before serving with seasonal grilled vegetables and chimichurri sauce.