Popa, obviously when I spoke of Kiddush, I was referring specifically to a parent giving a child alcohol-type Kiddush (wine only as opposed to grape juice, but never schnapps or the like). I should have said that more implicitly. My father O”H used to give us wine that was diluted with grape juice, in a tiny kiddush cup.
Apropos of your penal code quote, is it not also unlawful to serve alcohol to a minor who is at a party in your home?