Mustard Seed

Mustard Seed: History and Complete Culinary Guide

Mustard seeds come from three main plants: yellow/white mustard (Sinapis alba), brown mustard (Brassica juncea), and black mustard (Brassica nigra). Yellow mustard is the mildest, used in American-style yellow mustard and in pickling. Brown mustard — the variety most widely used in Indian cooking — is spicier and more complex. Black mustard is the most pungent and is used in South Indian cooking's tempering tradition. Mustard's pungency comes not from the seed itself but from the enzyme reaction when the seed is crushed in the presence of water — sinigrin (in brown and black) or sinalbin (in yellow) reacts with the enzyme myrosinase to produce isothiocyanates, the compounds responsible for mustard's heat. Dry heat destroys the enzyme, which is why mustard seeds toasted in oil become nutty and mild rather than pungent. The ancient Romans ground mustard seeds with wine to make an early precursor of modern prepared mustard, the most widely consumed condiment in the world by volume.

Culinary Uses

For Indian cooking: heat oil until very hot, add whole mustard seeds, cover immediately — they will pop and spit rapidly, then subside into a nutty, mild crunch. Add immediately to dal, curries, chutneys, and vegetable dishes (this tempering method makes them mild, not hot). For pickling: add whole seeds to brines for cucumbers, beetroot, and other pickles. For prepared mustard: grind with vinegar, water, and salt. For a mustardy spice crust: coat meat in crushed seeds before roasting. Add to coleslaw and salad dressings for mild heat and texture.