The Collaborative International Dictionary of English v.0.48:

Spoilable \Spoil"a*ble\ (spoil"[.a]*b'l), a.
   Capable of being spoiled.
   [1913 Webster]

WordNet (r) 3.0 (2006):

spoilable
    adj 1: liable to decay or spoil or become putrid [syn:
           decayable, putrescible, putrefiable, spoilable]
    n 1: food that will decay rapidly if not refrigerated [syn:
         perishable, spoilable]