2–3 long red chillies, seeds removed and finely chopped
10–12 garlic cloves, finely chopped
2 large handfuls finely chopped fresh curly-leaved parsley, leaves only
sea salt flakes and freshly ground black pepper
4–5 tbsp extra virgin olive oil
4 heaped tsp dried oregano
5 tbsp red wine vinegar
2 tsp sea salt flakes
2kg/4Β½lb well-hung boneless beef sirloin, not rolled (weight after bone removed)