Just a quick couple of links on UHT milk and why it may be bad for you, especially if you have a gluten intolerance.

I've always hated it anyway, so although I'm not in a position to verify the claims made in these articles, these are definitely pandering to my prejudices.

http://www.foodrenegade.com/just-say-no-to-uht-milk/
http://www.thehealthyhomeeconomist.c...-trojan-horse/

Thanks for the yogurt tips tho - definitely going to try the in-the-oven method!