Tonka bean, derived from the seeds of the Dipteryx odorata tree native to South America, is known for its perfumed black seeds that emit a rich, warm scent. The defining characteristic of tonka bean is its complex, sweet fragrance which comprises vanilla-like notes with hints of almond, spice, and tobacco. This unique aroma profile is largely due to the compound coumarin, which not only imparts a freshly mown hay flavor but also adds layers of richness and depth.
Tonka beans are widely used in perfumery to add richness and longevity to fragrances. They commonly feature in the base notes of scent compositions, harmonizing with other elements to produce lush, velvety, and slightly exotic undertones. The aroma can also evoke feelings of comfort and opulence, making it a popular choice in the creation of oriental and gourmand perfumes.
In addition to their use in perfumery, tonka beans are also employed in culinary settings to flavor desserts and beverages, providing a sophisticated twist with their intoxicating, aromatic sweetness. Their application, however, is regulated in some countries due to the presence of coumarin, highlighting the need for careful handling and usage.