Nigella oil, known as blackseed oil contains antioxidants and is used in natural remedies.    From Wordnik.com.  [Mistress of Spices, finally] Reference

The soup was surprisingly bland: the beetroot flavour was almost completely muted while the Nigella seeds (fennel flower, nutmeg flower, Roman coriander, blackseed, black caraway, black onion seed, onion seed or black sesame, among others) had none of the pungent taste they are supposed to impart.    From Wordnik.com. Reference