How to knit: I-CORD bind off on the Round with a completely jogless connection in a circle, using a tapestry needle.
I-cord bind off for neck trim, sleeves, cuffs, top down sweaters knitted in the round, toe up socks, top down hats etc. Easy process. Knitting for beginners. Continental knitting.
Matches well 3-stitch i-cord cast-on: https://youtu.be/poOgOzxkyH0
In the video: aran cotton yarn - changed from 4.5 mm (US7) used for the stockinette stitch to 4 mm (US6) for the i-cord, fingering/sock yarn - changed from 3.5 mm (US 4) to 3.25 mm (US 3).
SSK can be done faster, of course, (like we do decreases - slip, slip, insert the left needle from left to right opposite to the right needle, knit a stitch), but with cotton, for me, the way shown in the video produced neater stitches.
Happy knitting!