The Health Food Emporium Poppy seeds have a sweet, nutty flavor that is accentuated by roasting and baking. Poppy seeds are a great source of calcium, minerals and iron. Poppy seeds are an oil seed that can be used whole or ground as an ingredient in a variety of food dishes. They are highly nutritious and less allergenic than many other seeds and nuts. Try them in cookies, muffins, cakes, pastries, breads, bagels and even salad dressings.