American, never heard of this. Some quick searching, and I found an Australian dairy site which describes this as permeated milk. From this advert piece it might be a way of ensuring that the milk fat/protein ratios can be easily adjusted to hit some target numbers.
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In New Zealand our cow’s milk is separated into its components and then reconstituted and bottled. I would think it’s the same elsewhere too.
I grew up with real cow milk from neighborhood cows and I can taste the difference. To this day I won’t buy milk that tastes reconstituted.
American, never heard of this. Some quick searching, and I found an Australian dairy site which describes this as permeated milk. From this advert piece it might be a way of ensuring that the milk fat/protein ratios can be easily adjusted to hit some target numbers.
[0] https://www.dairy.com.au/you-ask-we-answer/why-is-milk-perme...