Co 36 longtail.
Row 1: (k1, p1) across row
Row 2: (p1, k1) across row
Repeat rows 1 and 2 until out of yarn or desired length.
Cast off, and seam together. Weave in any remaining ends.
My finished cowl is 18"x30". I just love the beautiful results of seed stitch, and it is such an easy stitch.