Hi B.,
I too have a couple of very picky eaters. My oldest, who is 10, has been that way his entire life. Basically eats meat, with no sauce, would eat cheese if he wasn't allergic to dairy, all bread/cookie/pastry products, and occasionally apples and oranges. No vegetables whatsoever. My 9 year old used to eat everything, but when he got sick with celiac at age 5 he developed taste aversions to nearly everything. He eats very little, rarely eats meat and fruit and no vegetables. He eats mostly dairy products and wheat-free bread products.
If you can, how about smoothies? You can throw practically anything you want into it. I like the kind with spirolina, but there are many kinds with many flavors. I keep frozen bananas in my freezer all the time, throw them into the blender with a scoop of spiroteen or some other veggie/protein powder, milk or soy milk and then frozen fruit or sometimes chocolate syrup. My 9 year old will have that every day.
Unfortunately my 10 year old won't drink the smoothies, so I give him super green capsules, multi-vitamins, omega 3-6-9, nettles and acidophilus every day. Then I don't worry about what he eats. It's just not worth fighting over food, and it won't change what he will and won't eat. BTW, my pediatrician said the same thing, and he went three, yes three days without eating when he was about four years old!
On the flip side, my 7 year old will eat anything you put in front of him and loves all fruits and vegetables. Although he eats the most variety and usually healthy foods, he is overweight while the other two are just right for their age and height.
--H.
mom to 3 boys, and one on the way