Baby food

I made the mistake of giving baby boy some of my food, which has some oil and salt and now he does not want to eat his. He shuts his mouth so tight you cannot get a spoon inside but wait he sees mine aaah mouth wide open.How do i explain to a 9 month old that his food is healthier than mine. I have tried spicing it up but nothing he still insists on mine. I heed some help.