All-Natural Kosher Freshness Dated Non-Irradiated Taste That Makes A Difference You can feel good about the superior flavor of Frontier seasonings. We source our spices from growers committed to quality, sustainability and ethical trade. The world's most expensive spice, saffron threads are painstakingly hand-picked. For a pungent, delicate flavor and rich yellow color, crumble saffron into breads, soups, seafood sauces and paellas. When adding to dishes with little cooking liquid, steep the threads in hot water before using.Frontier Natural Products