Assertion: spearmint's oil | /r/MadeOf | menthol
Facets:
Source sentences:
text: Mints have vigorous growth habits (with underground stems carrying start-ups of the plant in all directions) and aromatic leaves that bear a volatile oil (containing menthol).
text: The leaves are the parts of the plant that are used for their essential oils that contain menthol and flavonoids.
text: Spearmint oil contains menthol, which is perfect for alleviating respiratory problems caused by colds, allergies, bronchitis, and asthma.