Half Double Crochet (hdc)
A balance of height and density. Great for scarves and beanies.
Yarn over, insert hook into stitch.

Yarn over, pull up a loop (3 loops on hook).

Yarn over, pull through all 3 loops.

A balance of height and density. Great for scarves and beanies.
Polish-language HDC demo — visuals are universal. CC BY-SA 4.0.