I bought almond cheese once and read the package when I had eaten most of it, realized it had casein.
Vegan casein apparently exists but unless it said so on the package...
I am still trying to parse why you would need milk for vegan chips. I get that some chips aren't vegan because lard is used. But milk? Like is milk vinegar a thing? Do they extract salt from milk instead of oh I don't know grabbing some sea water?
The world makes less sense everyday.
Yeah whey is really sticky so it's an easy and cheap way to make flavors stick better to chips. I've found that Great Value S&V chips don't go this route and more expensive bands don't as well but Lay's and Pringles are pretty big on using whey.
Vegan products for decades: wow we don't happen to have dairy! lovely!
Vegan products around 2019-2024: what if I add 0.5% milk powder for that sweet, sweet state dairy subsidy