You can make it from milk and butter if I remember. You can make it from double cream (heavy whipping cream in the US).
And I would love to just buy a jar but I can’t find them anywhere except online!! It’s such a shame because I grew up enjoying it, and went a few years too busy to have anything with it, and then when I went to buy it… nowhere.
Eta: If someone has a solution for me in the US thst doesn’t involve paying a fortune online, I am all ears! More ears than anything really.
Ooh, excellent one.