Slofoodgroup Saffron a premium saffron that is pure, natural and full of flavor. This listing is for Genuine Negin A Saffron. Persian saffron from Slofoodgroup is the highest grade of saffron spice available. Saffron the world’s most expensive spice is hand cut all red filaments from the saffron flower Crocus sativus. Harvested once a year and naturally grown without pesticides or fertilizers our saffron is fresh and delivered fast. The spec for this product is ISO standard 259-2 for crocin coloring count at 255, safranal 37 and picrocrocin of 97. Our saffron threads are all red filaments that are deep in crimson red for rich coloring. This grade of saffron is great for use in kitchen, industrial and other applications.