Ive been fishing for ideas on this topic for a while without a difinitive answer...
I found a few options searching, but they were scattered throughout threads about scent
So i thought id start a dedicated thread to flavoring baits NOT scenting them
My findings/thoughts:
-Salt... Strong attractive flavor, but changes bouyancy, structure, color and jeopardizes durability of plastic
-Coffee... Earthy robust flavor, lighter than salt (i think) but only 1 of the 4 problems above solved
-Garlic salt/Powder... Proven fish attractant, but same story as the last two powdered solutions
-Animal fats... Oil based same as plastic, but minus the shelf life
-Fish oil... "Great idea" i said to myself last year.. Not only did it catch fish, but they ate my baits like they were live bait (1st Crappie jig results, in trophy room gallery).. Problem, next day the bag of baits was glued shut (sticky)
-MSG... I dont know, its used in cooking and in carp baits, but it is still in a powder form
Im sure this is a compromise, anything added to plastic has to change it somehow... But if there is something better than what i found, id like to hear about it!