Source : Webster's Revised Unabridged Dictionary (1913)

Seasoner \Sea"son*er\, n.
   One who, or that which, seasons, or gives a relish; a
   seasoning.

Source : WordNet®

seasoner
     n 1: a cook who uses seasonings; "the cook is a light seasoner"
     2: something added to food primarily for the savor it imparts
        [syn: {flavorer}, {flavourer}, {flavoring}, {flavouring},
        {seasoning}]