This is my favorite scarf. I made it about 5 years ago and I've used it every winter since, despite the fact that I've made and own others. I'd made a blanket for a friend for her birthday with this pattern and yarn and had bits left over. It was as easy as pie. Two strands of Homespun with a Q hook. Chain it for as long as you want it then single crochet into the back loop only all the way through. I made one in olive for Ma around the same time and I know she loves it. I kept the blanket I made in olive, the scrap yarn from which Ma's scarf was crochetted.
I always liked this pattern because, at the time, I couldn't knit to save my life. This pattern looks very much like it's ribbing.
Sorry for the crappy photography. The first is so that you can see the texture and the second is more true to the color.