milk got few types, check the ingredients:
- recombined (full cream etc) - import as milk powder then mix back as milk to sell
- UHT (tahan kept outside fridge before open type)
- pasteurized (best flavor but lasts very few days after open, and flavor changes over time)

barista milk is maybe recombined milk with added texture enhancer
some don't have

some shops chose their milk, then, ownself process to make cream
some shops use heavy cream to add texture (also must see made with fresh milk or recombined milk)