Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown
3 x shallots, peeled and thinly sliced
  marrow, from 1 beef marrow, (optional, see note below)
2 x egg yolks
  kosher salt and freshly grnd black pepper, to taste
  Porterhouse Steaks
2 x 2 inch thick, 24-oz porterhouse steaks
6 x marrow bones