STEAK SANDWICH W/ ENTRECÔTE SAUCE For the sandwich: 2 x 200g scotch fillet or sirloin steaks 1 tbsp olive oil Salt and freshly ground black pepper, to taste 2 ciabatta loaves, halved 1 brown onion, thinly sliced A handful of rocket leaves For the green entrecôte sauce: 250g unsalted butter 2 shallots, diced 1 handful flat-leaf parsley 1 handful basil leaves 1 tsp ground nutmeg 5 anchovies 1 tbsp capers 1 egg yolk 1 tbsp Dijon mustard Juice of 1 lemon 1 tsp Worcestershire sauce Salt, to taste FUL