Dyed using Xanthoria sp. lichen. 
Probably Maritime Sunburst Lichen, Xanthoria parietina but my lichen ID is not that good. 
 
Lichen dyes require a long extraction process. Xanthoria is a POD dye, photo oxidation, and is a very hands on method. Matching wool fabric done in the same batch. 
 
Recycled DK yarn. 
50g