You might have chanced upon a video challenge by a lovely lady called Sally Pointer, amongst other things she does self styled 'hedge bothering' videos and one that caught my eye a while ago is on prepping horseradish leaves to make cordage. I will always try and cite where I got an idea in a blog or Youtube video but often struggle to do so as, y'know, stuff just goes in and you move on...Well I can say hand on heart that this was the first time I'd seen Armoracia rusticana prepped in such a way so I've stuck a link in the video. Anyways, a session in the woods experimenting with Horseradish cordage to power a bowdrill set.