%gustable%

a. [ See Gust, v. ] [ Obs. ] 1. Capable of being tasted; tastable. [ 1913 Webster ]

This position informs us of a vulgar error, terming the gall
bitter; whereas there is nothing gustable sweeter. Harvey. [ 1913 Webster ]

2. Pleasant to the taste; toothsome; savory. [ 1913 Webster ]

A gustable thing, seen or smelt, excites the appetite, and affects the glands and parts of the mouth. Derham. [ 1913 Webster ]