Oxidize is also available as part of Whimsical Little Knits 3 which comes with instant ebook access.

Oxidize features an asymmetrical cable panel that makes a basic ribbed beanie much more interesting to work, without sacrificing the things that make that such a great classic. Truly my favourite kind of project, Oxidize is perfectly balanced between mindless and interesting, quick to complete, and easily adaptable to anyone’s style.
Cables are worked with twisted slipped stitches that stand out very crisply from the background. Use either a single colour, or alternate two to give the effect of solid coloured cables against a subtly striped background. Varying the length and amount of ease allows for a classic, fitted beanie style or a longer, slouchier version that many people find more flattering. The hat is completed with shaping worked neatly into the pattern, bringing the ribs and cable panel in to twine together at the top.

Yarn - Shown in A Verb For Keeping Warm Slick (75% superwash bfl, 25% silk, 240yds / 220m, 4oz / 113g) MC for both versions - Indigo Blue Sky and CC for short fitted version - Supernova

Short version - 110, 128, 146, 166 yds / 101, 117, 134, 152 m
Long version - 136, 158, 180, 204 yds / 124, 144, 165, 187 m

Needles - US 6 / 4mm 16” / 40cm circular and dpns (or other needles for working small circumferences in the rnd.

Helpful links
Technique Thursday - Cabling without a cable needle