Powdered seeds of black or brown mustard (Brassica nigra or B. juncea), or white or yellow mustard (Sinapsis alba), or a mixture. English mustard contains not more than 10% wheat flour and turmeric (still referred to in parts of England as Durham mustard, after Mrs Clements of Durham who produced the first commercial dried mustard in 1722).
French mustard is made from dehusked seeds (the light-coloured Dijon) or black or brown seeds with salt, spices, and white wine or unripe grape juice. Bordeaux (usually called French mustard) is black and brown seeds mixed with sugar, vinegar, and herbs. Meaux mustard is grainy and made with mixed seeds.
American mustard, mild and sweet, is made with white seeds, sugar, vinegar, and turmeric.
Subjects: Medicine and Health — Cookery, Food, and Drink.