Bordelaise Sauce. Cook one shallot, finely chopped, with one-forth cup claret until claret is reduced to two tablespoons, and strain. Melt two tablespoons butter, add one slice onion, two slices carrot, sprig of parsley, bit of bay leaf, eight peppercorns, and one clove, and cools until brown. Add three and one-half tablespoons flour, and when well browned add gradually one cup Brown Stock. Strain, let simmer eight minutes, add claret and one tablespoon butter. Season with salt and pepper. Remove marrow from a marrow-bone and cut in one-third inch slices; then poach in boiling water. Arrange on and around steak, and pour around sauce.