https://data.rkd.nl/excerpts/771141
type: CreativeWork
generated at time: 2021-02-10T11:32:22+00:00
abstract: To harden 'yseren' iron (?). Squash white grub and earth worm, sieve the liquids through a cloth and lay the 'ysen' in the juice. Let it harden over time.
additional type: recept
description: Ms. Germ. Fol. 244, f. 1-307