72 stitches were cast on using the German Twisted Cast On (also called the Old Norwegian Cast On) and knit 10 rounds of 1x1 twisted rib. I prefer using twisted rib for a 1x1 rib since the twisted stitch tightens up the rib for a cleaner look.
Once I was happy with the length of the leg, I started my heel flap. In my case, I knit a 36 stitch heel stitch heel flap. Starting with a WS row, I slipped the first stitch and purled the remainder. For row 2, I knit (SL1, K), repeating to end of row. I repeated rows 1 & 2 for a total of 31 rows, ending with a WS row.
To turn the heel:
Row 1 (RS): SL 1 wyib, K 22 stitches, SSK, K1; turn.
Row 2 (WS): SL 1 wyif, P 7 stitches, P2tog, P1; turn.
Row 3(RS): SL 1 wyib, K to 1 stitch before gap created by turn on previous row, SSK (1 stitch before gap and 1 stitch after gap), K1; turn.
Row 4(WS): SL1 wyif, P to 1 stitch before gap created by turn on previous row, P2tog (1 stitch before gap and 1 stitch after gap), P1; turn.
Repeat rows 3 & 4 until all stitches have been worked 22 stitches remain.
Gusset decreases start on the next row and alternate every other row until all the stripes are gone. Since the gusset is striped, I knit the decrease using the last 2 stitches before the instep and the first 2 stitches after the instep. Once the decreases are complete there are 36 sole and 36 instep stitches on the needles. Continue in pattern until the sock is 2" from end of foot and start the toe. I knit the following toe:
Switch to toe color.
Round 1: K, SSK, K*, K2tog, K
Rounds 2&3: K*
Round 4: K, SSK, K*, K2tog, K
Round 5: K*
Repeat rounds 4 & 5, 5 more times for a total of 6 rounds.
Round 16: K, SSK, K*, K2tog, K
Repeat round 16, 7 more times for a total of 8 rounds. 12 stitches remain.
Graft the toe closed using Kitchener stitch, weave in ends and block. Blocking is important in stranded socks as it will make your stitches more consistent.
Details of this sock can be found at Black Holes and Fading Suns.