Fine annatto powder made from annatto seeds grown for this purpose. Use at 30% WOF for strong peach and orange hues.
Easily dissolvable in hot water. Amazing for use in a dye blanket or in combination with other natural dyes.
Annatto does need a good mordanting of 20% WOF alum or 10% Tannin before dying. Not extremely lightfast. Great for projects with small children, food grade.
Example by Inen Kurnia from Indonesia. Visit her work and teaching on Facebook.