Using the aran yarn from the frogged Minty Ridge and a much easier stitch pattern (than my earlier blanket attempt) that I can knit in front of the TV:

Cast on 201 sts.

Row1 (WS): Slip first st purlwise with yarn in front, P1, K1 100 times.

Row2 (RS): Slip first st purlwise wyif as above, K200.

Repeat these two rows.

Cast off knitwise on a RS row using a larger needle.