Assertion: tarragon's oil | /r/HasProperty | essential
Facets:
Source sentences:
text: French tarragon has a sweet aniseed flavor, due to the high level of the component estragol in its essential oils.
text: One of the more expensive herbs, “true” (or French) tarragon must be propagated by division and is dried in the shade to preserve the leaf color and essential oils.
text: Tarragon is useful in the kitchen and can also be made into an essential oil with aromatherapeutic properties.