Noun
unctuousness (uncountable)
The state or characteristic of being unctuous.
Synonym: unctuosity
Bacon fat brings out a salty unctuousness to cut through the sweetness of the sugars, and butter brings the milk fats to the party to give you a toasty nuttiness. Source: Internet
The shoulder, however was nicely marbled and cooked to a tender unctuousness with cabbage and carrots. Source: Internet
Its unctuousness really adds another layer.” Source: Internet