The traditional stuff is very thick, a knife would stand up in it. It is spreadable, like Nutella. I suspect it is an English invention and I bet they put it on scones. Its extremely lemony and sweet and it'll make your tonsils writhe in lemony ecstasy. I have put it on French Toast, bread, yogurt, cottage cheese, directly on my tongue... anything I can think of! Oh yes, another thing I think people put it on is pound cake.

My version, without the butter, isn't quite so thick and is more like a custard or pudding versus a spread. Still extremely tasty on all the things I mentioned.