Tonka bean smells sweet and warm, like vanilla crossed with almond, hay and a whisper of tobacco. It is one of perfumery's most versatile gourmand-amber materials.
The bean is the seed of Dipteryx odorata, a tropical tree native to the Amazon basin and grown commercially in Venezuela, Brazil and parts of Nigeria. Seeds are fermented in rum or alcohol for a day, which draws coumarin crystals to the surface and deepens the scent. Natural tonka absolute is rich and dark; isolated coumarin provides the purer sweet-hay facet and was synthesised in 1868 for Fougere Royale, the first fougere.
Tonka is a base note and a fixative. Perfumers use it as the signature sweetness of modern gourmands, the soft heart of fougeres, and the amber warmth behind vanilla and benzoin compositions. It pairs beautifully with lavender, rose, oud, vetiver and iris.
Tonka performs best in autumn, winter and evening wear, and gives fragrance a comforting, almost edible warmth without reading like a dessert.
