Saffron, often referred to as “red gold,” is one of Spain's most prized ingredients, and one of the world's most expensive spices. It is hand-harvested from stigmas of the flowers of the crocus plant. Saffron is used in a wide range of dishes and culinary traditions. Today, there are many regions worldwide that produce this luxurious red spice, however, Spanish saffron is considered to be some of the best there is.