Un-named Unvented Toe Up Sock Cast On

Step One
 Pull out your trusty crochet hook.  I use a medium small one, size F (3.75MM).  Size isn't massively important but nothing huge or tiny.

Step Two
  Using the yarn you're going to use for your sock (there is no waste yarn in this cast on) chain 1/4 of the total number of sock stitches you will need plus one.  (EG for 60 stitches total in the sock you will cast on 15 +1 = 16).

Step Three
  Using the loops on the right side (rather than the bumps on the back as most crochet related cast ons use) pick up and knit (knit up) 15 stitches.  (The chain should look like this (|) You will pick up on one of ( to knit into.

Step Four
  Using another needle, pick up and knit the loops on the other side of the chain, to 15 stitches. 

Step Five
Knit one row across on each needle.  Then you can start your normal toe increases.