I used some unlabelled yarn bought in Normandy this Summer through Annie Vérité, a local textile designer and crocheter. All I know is it’s a vintage wool from Aubusson, in the Creuse, and a lovely colour ;-). It’s obviously non-treated, quite rough and “sticky”.
I knitted it with one thread of Plumette I had in stash to add some light and some “cosy-ness”.