Ingredients · Spice

Brown Mustard Seeds

Brassica juncea · Brassicaceae (cabbage family)

Brown Mustard Seeds
The hot mustard. Yellow mustard, Sinapis alba, is the mild one; brown and oriental mustard are Brassica juncea, and they carry considerably more bite. One product carries them whole. In Indian cooking they are used quite differently from anywhere else — popped in hot oil until they crackle and turn grey, which transforms them from pungent to nutty. Like all mustard, the heat only appears once the seed is wet and broken, and cold water makes it hotter than hot water does.

What it’s like, and how to use it

The partSeed
KindSpice
CaffeineCaffeine-free
Where it is fromCanada
TasteSharp and pungent when crushed wet; nutty and mild when popped whole in hot oil

How to use it

Popped whole in hot oil for an Indian tempering — wait for the crackle, then move fast. In pickling brine. Ground for a hotter prepared mustard than yellow seed gives. In Bengali cooking, ground to a paste with water.

With food

Potato and cauliflower. Lentils. Fish, in the Bengali manner. Cabbage. Vinegar. Honey. Pork.

With spices

Cumin, fenugreek and curry leaf, in a tempering. Turmeric. Chile. Dill and celery seed, for pickling.

With tea

Not a tea ingredient.

Its story

Where it comes from

Canada was the world's top exporter of mustard seed in 2021, and Saskatchewan grows almost 90 per cent of the Canadian crop — brown and oriental among the three types grown. Our lot names no origin, but Canadian seed is likely.

What happened

Mustard's heat is a chemical reaction rather than a flavour sitting in the seed. Water brings the enzyme myrosinase into contact with the seed's glucosinolates, and the pungency builds over about ten minutes; cold water makes it hotter, hot water milder, and acid stops the reaction where it stands. The Romans ground the seed into unfermented grape juice and called it mustum ardens — burning must — which is where the word mustard comes from. For a Calgary shop the brown seed is close to home: the Prairies have grown mustard since Alberta's first crop in 1936.

On the shelf with it

Sold on its own, and in these blends.