A-to-Z List of Essential Oils with a Bitter Aroma:
Sharp, Biting, and Unpleasant to the Taste
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Arnica
(Arnica montana)
Aroma Description: Herbal and bitter, discreet and neutral with a hint of cut grass
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Kapoor Kacheri
(Hedychium spicatum)
Aroma Description: Balsamic, Bitter, Camphoraceous, Cool, Earthy, Fresh, Resinous, Woody