Grilled Steak with Sauce Vierge | Saveur

Ingredients

• 1⁄4 cup roughly chopped flat-leaf parsley
• 1 tbsp. capers
• 12 large green olives, such as cerignola, pitted and roughly chopped
• 6 oil-packed anchovy filets, drained and finely chopped
• 4 cornichons, roughly chopped
• 1 shallot, roughly chopped
• 1 clove garlic, finely chopped
• 1 jalapeño, stemmed and finely chopped
• 1⁄2 cup extra-virgin olive oil
• 1 tbsp. dijon mustard
• Kosher salt and freshly ground black pepper, to taste
• 4 (½"-thick) top sirloin steaks (about 2 lbs.)