Anatto or achiotte, (bixa orellana L.) is a plant is grown mostly in South America and Brazil is the main producer and exporter. Known here as urucum or colorau the seeds are used as a natural red food coloring in the food industry, comestics (lipsticks) and also in the Brazilian cuisine. The color result is similar to paprika, although it does not alter the flavor of the food. Also, Brazilian indians and other Latin-American indians use the seeds to make body paint.
The most common way to make annatto powder is to heat the seeds in oil, then transfer the seeds to a mortar, add fine cornmeal and grind them with the pestle. Pour through a fine mesh to separate seed skins from powder and you are ready to go.