The aged root of the Iris (Iris florentine) Pallida is used to produce orris absolute, orris concrete (Beurre d'Iris) and orris resinoid.
The powdered aged root is used in cosmetic preparations and as a fixative in herbal sachets and pot pourri.
Orris resinoid, which is extracted from the aged root using a solvent like ethyl alcohol, is technically a true concrete. It is called a resin due to it honey like consistency. The 'resinoid' is cheaper than the steam distilled butter.
Orris butter is produced in France, Italy and Morocco.
The smell of aged orris is warm, sweet and violet like due to the high percentage of alpha-irones it contains.