Known for a very long time, mustard was first appreciated for its medicinal virtues. It was made into sinapisms, i.e. poultices that were applied to the upper chest to treat the bronchial tubes. This practice was abandoned in the 19th century. Since then, mustard, of which Canada is the world’s largest producer, has become an indispensable condiment in the kitchen. Not only does it spice up a sauce or marinade, but it is also available in a variety of products: Dijon mustard, old-fashioned mustard, herb mustard, tarragon mustard… A spice that you must have in your cupboard.