Duxelles

This versatile mushroom seasoning is thought to have been devised by La Varenne, master cook to the Marquis d’Uxelles and author of the first modern cookery book in France, Le Cuisinier françois, which appeared in 1651. A pot of duxelles will store in the refrigerator for a few days, or for longer, ideally in cubes, in the freezer. Add to sauces, stuffings (especially for fish), soups and pies.