The Collaborative International Dictionary of English v.0.48:
Sapidness \Sap"id*ness\, n. Quality of being sapid; sapidity. [1913 Webster] When the Israelites fancied the sapidness and relish of the fleshpots, they longed to taste and to return. --Jer. Taylor. [1913 Webster]WordNet (r) 3.0 (2006):
sapidness n 1: a pleasant flavor [syn: sapidity, sapidness]