Argentinian Chimichurri Skirt Steak
Combine parsley, oregano, garlic, chilli flakes, and coarse salt. Stir in red wine vinegar and olive oil to make chimichurri. Let it rest at least 30 minutes at room temperature for the flavours to meld.
Pat steak completely dry and season generously on both sides with salt and black pepper. Allow to come to room temperature, about 20 minutes.
Grill over the highest possible heat (charcoal preferred) for 2–3 minutes per side for medium-rare. Do not move the steak while each side is cooking to get a proper sear.
Rest steak 5 minutes, then slice thinly against the grain. Spoon chimichurri generously over the top and serve with bread or fries.