Herbs & Spices

Mustard Seed

Health
ScoreA+

Mustard seed is a pungent brassica seed that develops sharp isothiocyanate heat only when crushed and wetted, ranking among the most selenium- and protein-dense culinary seeds.

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Why Mustard Seed scores 95

Nutrient density30

Protein quality12

Fiber content10

Healthy fats9

Bioactive compounds14

Glycemic impact10

Top nutrients

% Daily Value per a pinch (2 g)

Selenium 7.6%Manganese 2.1%Magnesium 1.8%Copper 1.4%Thiamin 1.3%

Nutrition

per_100g

508

Calories

26.1g

Protein

28.1g

Carbs

36.2g

Fat

12.2g

Fiber

Health benefits

Provides exceptional selenium for antioxidant and thyroid function

strong evidence

About 208mcg selenium per 100g supplies a key cofactor for glutathione peroxidase antioxidant enzymes and thyroid hormone metabolism

Delivers chemoprotective isothiocyanates

emerging evidence

Myrosinase converts glucosinolates into isothiocyanates that induce phase II detoxification enzymes and inhibit carcinogen activation in laboratory models

Supplies antimicrobial activity

moderate evidence

Allyl isothiocyanate disrupts microbial membranes, inhibiting bacteria and fungi and acting as a natural food preservative

Contributes dense protein, magnesium, and phosphorus

moderate evidence

26g protein, 370mg magnesium, and 828mg phosphorus per 100g support tissue maintenance, energy metabolism, and bone health

Pairs well with

·Crush or grind seeds with cool (not boiling) water to maximize isothiocyanate heat, which then mellows with time and acid
·Pair with vinegar and honey because acidity stabilizes the pungency and sweetness balances the heat in prepared mustards
·Temper whole seeds in hot oil with curry leaves and turmeric because the fat carries the mellowed, nutty flavor through the dish
·Use with cruciferous vegetables because mustard's glucosinolates complement and reinforce the same beneficial compound class

Practical tips

·Best timing: Mustard seed is a cooking and condiment spice with no circadian dependency; its minerals and isothiocyanates benefit any meal.
·Develop maximum heat by crushing seeds into cool water; hot water and prolonged cooking destroy the sharp isothiocyanates
·Temper whole seeds in hot oil until they pop to mellow and nuttify them for South Indian dishes
·Choose brown or black seeds for more heat, yellow for a milder flavor and better binding in prepared mustard
·Because of the oil content, smell-check older seeds for rancidity; store in a cool, dark place or the refrigerator
·Buy whole seeds; mustard powder loses pungency far faster than intact seeds