I try to go the supplement route with those things that seem to make a difference surreptitiously. I put magnesium in her smoothies, feed her foods with ALA o-3s since the only veggie DHA comes from algae and tastes so bad that she'd notice if I slipped it into food (although DHA is probably better)...
I can cover up the taste of the fish oil with mint extract.
DD eats these "bars" that are black beans, honey, cocoa powder, flax meal, and fish oil all mixed in the food processor. I stir in raw oatmeal, then squish it into blocks with wax paper and freeze it.
Looks nasty, but she's eating it willingly and getting 300 mg of fish oil each day without complaint.
