Annatto or Bixa orellana, a tree native to the New World tropics, grows to about 30 feet tall and has rose-pink flowers and ovate leaves. The brown fruits, yield a reddish or yellowish powder that is used in a dye for butter, cheese, and oleomargarine. This plant is cultivated in tropical and subtropical areas of the world. Traditionally, the crushed seeds are soaked in water which then is allowed to evaporate. A brightly colored paste is produced which is added to soups, cheeses, and other foods to give them a bright yellow or orange color. Annatto seed paste produced in South America is exported to North America and Europe, where it is used as a food coloring for margarine, cheese, microwave popcorn, and other yellow or orange foodstuffs.
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