Just wait 'til he's a bit older. Sending him on small missions so you can take your secret nip of batter won't work any more. He'll either catch you doing it, or he will smell it on your breath/see it on your lips/tongue after you've been sneaking. That is what I've run into with Andrew. Just let him have a nip of it every so often, when you can no longer divert him. It hasn't killed Andrew yet, though he's only 4 and 3/4ths :)