King Cole Merino Blend DK, double stranded. (or any 16 ply/22 wpi yarn)
8mm circular needle (60,80 or 100cm long)
Cast on 136 stitches.
Join work, place marker and knit one row.
Train Track stitch:
(here's a link for more details on the Train Track stitch which includes a video demonstration)
Row 1: *K2tog, yo twice, SSK. Repeat from * to marker.
Row 2: *K1, [K1, P1] into the yarn overs, K1. Repeat from * to marker.
Repeat these two rows until work measures 17cms.
Knit one row and cast off. Weave in ends.