Someone asked for the instructions for how I made this cowl. Here it is in short.
Worsted weight yarn
Size 10.5 US needle
Cast on 160 sts, place marker, join in the round
Knit 3 rows
row 1: *YO, knit 2 tog*
row 2: Knit
row 3: *SSK, YO*
row 4: Knit
Repeat these 4 rows until you are almost out of yarn, or you reach the desired depth, stopping after row 4. Knit 2 more rows. Bind off.
Mine used 220 yards of yarn.
Merry Christmas and a Happy New Year!