Atún Asada con Oregano y AjoEl Campanario restaurant in San Miguel de Allende takes pride in its fresh fish offerings. Before you order, a large tray of fresh fish of the day is brought to the table for inspection. I ordered tuna steak with this bold and fabulous oregano and garlic sauce. In Mexico, a molcajete (traditional basalt mortar) would often be used to mash the sauce ingredients, but in the United States you can use a regular mortar and pestle or mash the garlic with a garlic press or the side of a heavy-bladed chef's knife, then mix it with the other ingredients.Maggi is a concentrated seasoning extract that's used a lot in Mexico to enhance flavors in sauces, soups, and stews; look for it in Mexican markets here or substitute Worcestershire sauce; it's not the same but adds good flavor.