Peter at Hyperlipid has some really cute pics of his child being raised like yours. Very little starch and sugar. I would not make a big deal when out with friends, he can have little bits later.

LOL why not. Sounds like a great lesson for drug-like food. Well, the cake anyway. Sandwiches not so much.

I have friends with kids who seriously save cupcakes to only eat after meals, because the kids themselves don't like how it feels to eat such intense refined sweets between meals. That took a lot of learning though and experimentation and the kids were older.