Ius in elixam (Sauce for Boiled Meats) is a traditional Ancient Roman recipe for a classic sauce of pepper, parsley, liquamen, vinegar, dates, shallots and olive oil in a meat stock base intended to finish braised meat. The full recipe is presented here and I hope you enjoy this classic Ancient Roman version of: Sauce for Boiled Meats (Ius in elixam).
Pound together the black pepper, parsley, dates and shallot in a mortar. Work in the liquamen, vinegar and olive oil then whisk in the meat stock.
Braise your meat as you normally would, and about 30 minutes before it is due to be ready pour over the sauce and continue cooking. If desired, the braising liquid can be made into an accompanying sauce by boiling it down and thickening with a flour and butter roux or by mixing in a little cornflour.