Agreeably pungent or sharp in taste or flavor
1. piquant - having an agreeably pungent taste .... esteemed by the 
epicures of the South as more than rivalling the exquisite flavor of the oyster, -- all 
the... [DOC] [TLE] Zesty - definition of zesty by The Free Dictionary [PAR] Flavor or piquancy: a spice that lends zest to the sauce.