Brown Mustard Seeds (Brassica juncea) is a common culinary spice used to add a digestive kick to a variety of recipes. The mustard seed is hot, pungent, and oily, which makes it ideal for stimulating the digestive fire and balancing Vata and Kapha, but possibly too heating for pitta. These tiny brown seeds are best when sautéed with complementary spices like turmeric, cumin, and coriander. Mustard seeds are rich in a nutrient called selenium. Mustard seeds are very rich in calcium, manganese, omega 3 fatty acids, iron, zinc, protein, and dietary fiber — include them in your diet. Mustard seeds are a rich source of oil and protein.