M.G.
Mother's milk tea is better than any of the other stuff. I've heard there's a mother's milk tonic that's even better, but I don't know where to get it.
Cow's milk: Just give it to him. He'll likely wean himself though because there's a lot more fat in cow's milk than your breastmilk after 1 year. I gave it to mine cold, and he loved it. He weaned himself on his 1st birthday, which was so hard for me, but it worked. I think just continue to try the cow's milk until he finally tries it.