On Monday, January 29, 2018 at 11:15:53 AM UTC-10, Ophelia wrote:
>
> Yes, I don't use much buttermilk so I freeze any excess.

I'm surprised that you have buttermilk in the UK. My guess is that you don't call it "buttermilk" because it doesn't really have anything to do with butter. In the US, buttermilk is a fermented product, i.e., sour milk.