This cowl is worked in the round in one Piece. Yarns A and B are alternated on each round and the unworked yarn is carried up.
Want to see how easy Brioche can be? Check out our swatch pattern here:

https://www.artyarns.com/email/pdfs/KALs/Brioche/Briocheswatch.pdf

It is worked using 1 skein of Cashmere Eco (shown in Oatmeal N2 and 1 skein of Beaded Silk and Sequins shown in 144 Silver. A joy to knit, and feels heavenly on the skin. Wear it with the beaded side facing for dressing up, and with the cashmere side facing for dressing down.

Purchase the yarn through any Artyarns resellers to get a copy of the pattern.