kitsune,
My take is as long as I am the one who cook, I will not add any additive to the food (even for our own food, we put either no or very little salt), as long as my boy is willing to eat. But then at the same time, my boy has already been exposed to the outsite food, which is not necessary unhealthy, just to be cautioned that it's not too sweet or too salty. Somehow one day, they will have to get use to the "normal" food, unless you have the energy and time to cook separately for your kids many years down the road. I think most cc will have this in mind, no? For the infant care Hao Re is attending, I am very sure they don't add anything cos I tasted it several times before. But not quite sure about the food next door (the playgroup/nursery classes).