I made this sample in Interlocking crochet with a 3mm hook with Scheepjes Catona (fingering weight). But it can be done with any yarn and any hook, the finished size will vary accordingly. I added instructions on how to make a loop in a corner to make a potholder out of it.

This pattern can be followed with video tutorials on my YouTube channel: Astrid’s Interlocking crochet YouTube channel
Here you find also the tutorials for basic Interlocking crochet (Astrid’s Christmas tangle potholder)