Making liquor with normal milk instead of UHT milk
This should be a comment but I have no reputation so I apologise if not much of help.

Anyway if you're trying to accomplish something like a cream-based liqueur, sure you can use normal milk.

I've prepared a Baileys-like liqueur with normal milk and uht crem and results were amazing!

The lifetime of the product was unaffected by the use of a fresh product (storage lifetime in fridge was something like 3 months due to alcohol and sugar added to the mix)