2 balls Noro Kureyon, Silk Garden or Shinano yarn.
40cm length 6mm circular needle.
4 stitches = 1 inch.
Cast on 60 stitches. Choose a method of casting on that will show the cast on stitches clearly, as you will be picking these up again later. I use the crochet hook chain cast on method, which works perfectly for this.
Row 1 Purl across the row. Row 2 K1, K2 tog, K to last stitch, M1 then K last stitch. Row 3 Knit across row. Row 4 P1, P2 tog, P to last stitch, M1 then P last stitch. Row 5 Knit across row. Row 6 K1, K2 tog, K to last stitch, M1 then K last stitch.
M1 = Make 1 stitch. Do this by picking up the horizontal strand of yarn that lies between the stitch that you have just transferred to your right needle and the stitch that is next in line on your left needle.
Keep repeating these 6 rows and you will see your piece of knitting get longer at one end and shorter at the other – a parallelogram, in fact. Keep going until you have completed the number of rows you require. To check how many rows you need to knit, measure your “hat line” around your head. You want the length of your knitting to be an inch or two less than your hat line measurement, depending upon how snugly you want the hat to fit. When measuring the length of your knitting, run your measuring tape along one edge of the knitting, from the cast on edge up to your needle, following the diagonal line of your knitting. I repeated the 6 rows 15 times, to give 90 rows in total, but I have quite a small head.
Once your knitting it long enough, use your empty needle to pick up 60 stitches along the cast on edge, making sure that the points of both needles are facing the same direction. Now join the picked up stitches to the stitches on your other needle by using a 3-needle cast off (bind off). I personally find it easier to use a crochet hook for this, rather than a third needle. This bind off method does produce a visible seam, so when you reach the section of the hat that will be turned up for a brim you might want to to flick your knitting inside out so that you continue casting off on the other side (so that the seam won’t be visible when you turn up the brim).
This should leave you with a tube, showing the twisted rib very clearly. Using more yarn, sew a gathering line all around one of the open ends of the tube, by picking up the edge stitches. Gather up firmly and secure with a few stitches. Please be aware that the tube will be a bit bulky at this point which makes it tricky to gather up neatly. You may prefer to accommodate that by sewing a flat seam and having a squared off top to your hat. Whichever option you choose, if you’re using Noro yarn, don’t pull too hard, as these yarns are rather brittle. You should now have a recognisable hat.
Turn the hat inside out, so that the stitches you just made are hidden inside the hat.
If you gathered the top of the hat in the traditional way, you may wish to make a pompom with the spare yarn and stitch this to the top of the hat.
Finally, turn up the other end of the hat to make a nice brim and it’s all finished.
You shouldn’t need to block the hat, especially as it’s a rib pattern.