Many popcorn granny square blankets have been made but I’ve never seen one with this many rows of popcorn stitches or instructions quite like this!

Each square is about 26x26cm w/ a USH/8 hook (5.00mm), but the author doesn’t specify what kind of yarn was used. My guess is Worsted or DK weight yarn, but really this would work in any weight! Just adjust hook size as needed!

The author also did not specify the yardage required, so maybe make this out of something that you have a ton of or can easily get more of without hassle or issues with dye lots.