dust-drenc, m.n: a drink made of the seeds of herbs rubbed to dust. (DUST-DRENK)
Tristan drinks love potion while playing chess with Isolde in Arthurian compilation of Micheau Gonnot. France, 1470. Paris, Bibliothèque Nationale de France, Ms. fr. 112 (1), f. 239r. [gallica.bnf.fr]