Sweet, spicy, earthy, and distinctly reminiscent of licorice or anise, fennel essential oil has one of the most recognizable aromas in aromatherapy. The oil is commonly steam distilled from the fruits—often casually called “seeds”—of Foeniculum vulgare. Sweet fennel essential oil is typically rich in trans-anethole, the aromatic compound largely responsible for its characteristic sweet anise-like …
