whey-butter

noun, a butter made from whey or whey-cream (“whey, n.” OED)

“They would drain the whey off, and in our factory, we saved the whey, and it went through a separator and made whey-butter. Did you ever hear of whey-butter?”

“When they were using the whey for the pigs it was good, before they started making whey-butter. The whey-butter took a lot of the texture and nutrients out of it, and then it was more like water.”

“We used to be Kingston Creamery, at one time, and that’s where you took your cream. And at the back was where you took your cream, and they made butter and whatever, whey-butter and whatever, out of it.”

“Well, and before they started separating the cream, the whey was pretty good feed. You could feed your, like, spring calves that. There was still good stuff in it, eh. Well, then up at the Kraft, then, they separated and made whey-butter, eh. So the whey was just more or less just water.”