Walnut Husk Ink Revisited

UPDATE:

It’s been about a year since I wrote this post when I made a batch of walnut ink. I’ve been using it regularly and it’s delicious, silky, smooth and rich. It seems to be lightfast, no signs of fading on any of the pieces, although I’ve been careful to use best quality acid-free paper like Fabriano and Saunders.

Here’s the most recent drawing, in carbon and white conte crayon overlaid onto a background of walnut ink.

So today I finally finished the walnut ink I started a couple of weeks ago. A friend gave me 4 fresh walnuts (juglans regia) in their husks. I peeled them and left the husks to stand in a basin of water for about a week and a half. They went very black and mushy. I put the basin, covered with tin foil,  into a slow cooker with hot water coming up to half…