Poached Beef Fillet with Vegetables

This version of boeuf à la ficelle is garnished with little new vegetables, but you could easily use big vegetables cut up, and could include cabbage, mushrooms, leeks and other roots, as well as marrow bones, duck sausage, garlic sausage, and tongue. Other herbs, like rosemary, can be substituted, and why not dot the plate with tomatoes dressed in olive oil and fresh herbs? Whole-grain mustard is a very good accompaniment.