Makes 2 servings 2 (8-ounce) tuna fillets 2 tablespoons plus ¼ cup olive oil Salt and freshly ground black pepper to taste 1 medium-size yellow onions, peeled and cut into 1/4-inch slices 4 anch..

This is a recipe you can experiment with to determine your personal taste. Simply rub the sashimi grade tuna with olive oil, then dredge in coarsely-ground black pepper and kosher salt.