Mustard
Sauces, Spices & CondimentsFrench, c. 1393 / English, c. 1140Le Menagier de Paris; Sidney Sussex MS 51Crown Hospitality SpreadCurrent project — cooking pending
Original
Named preparation — ground mustard seed with vinegar. Le Ménagier de Paris (Greco & Rose, 2009); also in 12th-century Poitevin sources (Gasper & Wallis, English Historical Review, 2016). Mustard-making is one of the oldest documented condiment preparations in European cuisine.
My Redaction
Grind mustard seeds, mix with vinegar to desired consistency. Let stand to mellow. Shelf-stable. The simplest documented item on the list — and one of the most useful for the table.