These three samples are a cotton/viscous blend, a cotton /rayon slub blend, and a cotton silk blend. The silk took it fairly well, but not as dark as the wool did. I am looking forward to the silk wool blend I am dyeing next week. I strongly recommend you click on each of these pictures to get a larger view. I want to try dyeing some bamboo and other "vegan" yarns with coffee. Just because I am into the "learning about stuff" thing.
So here you have a view of coffee dyed merino. Much prettier than cotton. You will notice the slightly darker spot on the twisted skein. That is why I refer to this as a "mostly solid" colorway.
Who knew frogs liked to nest in yarn? I thought they just liked to dig holes in the garden or hang out in the garage.