Trade and use of saffron Church in Pennsylvania. In recent decades cultivation has spread to New Zealand, Tasmania, and California. Iran has accounted for around 90–93 percent of recent annual world production and thereby dominates the export market on a by-quantity basis. Almost all saffron grows in a belt bounded by the Mediterranean in the west and mountainous Kashmir in the east. All other continents except Antarctica produce smaller amounts. In 1991, Some of whole threads and powder are gleaned yearly, of which is top-grade "coupe" saffron. Iran is by far the world's most important producer: in 2005 it grossed some of dry threads, or
Saffron bun areas and by Swedish-speaking Finns, as well as in Norway and more rarely in Denmark. Most commercially available saffron buns and cakes today contain food dyes that enhance the natural yellow provided by saffron. The very high cost of saffron - the world's most expensive spice by weight - makes the inclusion of sufficient saffron to produce a rich colour an uneconomical option. The addition of food colouring in Cornish saffron buns was already common by the end of the First World War when the scarcity of saffron tempted bakers to find other ways to colour their products. Saffron bun