It's a chain ply; just like the crochet chain stitch.
Thats right.....it amazes me how it works. It makes a 3 ply that is really nice.
You can tell from the above photos i am no expert......hard for me to keep a consistent size yarn. I started spinning in the 80's but i didnt spin for several years...work..kids...you know. I dont worry anymore about getting perfect yarn. I like bumpy yarn...lol...and bright colors. And it knits up pretty well.
Come on y'all post some pics.