A very simple customizable pattern, gauge isn’t super important, but I do reccomend have a pint Mason jar to try it on periodically.
Very basic cables, good for beginners, and keeps the drink the desired temperature for a good few hours.

I reccomend using your favorite worsted cotton or wool yarn for this pattern.

Requires magic loop or DPN needles, 5mm, and a cabling needle to match.

Edited to include needles and fix recommended yarn.