Here’s one search result I’m sure you’ve seen... but what the heck? It’s interesting, I think.
http://fergustheforager.co.uk/2009/06/208/ I’ve never heard of leaf curd, never even dreamed of such a thing, so thanks for bringing it back up. We don’t have that much here in the way of abundant, unused vegetation (brittle area, usually), so I won’t be trying it, but interested in what you come up with from your experiments.