I finished my Tunisian knit scarf! This is not Tunisian crochet, but the Tunisian knit stitch, which is a kind of brioche stitch. I love the distinct grid, which is so different from what is normally seen in knitting. It is also an "endangered" stitch these days; I've only seen a few examples online. From what I've read, it used to be used to make the high-quality embroidery fabric, though obviously with finer cord and much finer needles.
The stitches are upside down, so will look a bit different than images. I'll do another picture later.
The yarn is Berroco "Remix", which is a blend of 100% recycled fibers. It is 30% Nylon, 27% cotton, 24% Acrylic, 10% silk, 9% linen. It is also one of the softest yarns I've ever felt. It is a bit rough (and being recycled occasionally contains knots), but it feels like that 10-year-old t-shirt in the back of your closet that you don't dare wear outside but won't throw away because it's so soft.
While the yarn recommends size 8, this was done in size 11 needles. Tunisian knitting produces a very thick, almost quilted material. I wanted it to be a bit like netting, so I tried 10 needles but went to 11.
Tunisian knitting requires two passes per row of stitches, so it eats yarn very fast. Also, the selvedge becomes very loose if you do a selvedge stitch. You have to pull the edge stitches very tight to mitigate this.
EDIT: The image labeled "proper" is right-side-up.