It was sufficiently risky to give a piquance to the experience.    From Wordnik.com.  [With The Immortal Seventh Division] Reference

Essence of anchovy, ketchup, cayenne, grated lemon-peel, mace, and other spices are added by those who prefer piquance to the genuine flavor of the oyster.    From Wordnik.com.  [A Poetical Cook-Book] Reference

In any case, the covers themselves are pretty enough, and in a nice, sparkly yarn might even add a tantalizing “you can glimpse the zill, but you cannot touch it” piquance to the zill-dancing experience, or perhaps that is only for those who identify too closely with inanimate brass objects, not that we know anyone like that around here.    From Wordnik.com.  [finger cymbals too loud? problem solved: crocheted zill covers « raincoaster] Reference

He caught the fineness of her nose, straight as a Grecian's, but with some faint suggestion about the nostrils that hinted at piquance.    From Wordnik.com.  [The Blazed Trail] Reference