Preparation Mix tomatoes, lemon zest, garlic, arugula, breadcrumbs, capers, and vinegar in a small bowl. Using a wooden spoon, slowly mix in 3/4 cup oil, then Parmesan. Pour a little oil on surface to keep salsa from discoloring.
Preparation Mix tomatoes, lemon zest, garlic, arugula, breadcrumbs, capers, and vinegar in a small bowl. Using a wooden spoon, slowly mix in 3/4 cup oil, then Parmesan. Pour a little oil on surface to keep salsa from discoloring.