TAST stands for Take A Stitch Tuesday which is an online course of stitches on Sharon Boggon's Pintangle. Join in and learn. If you want to do it from scratch, there will be a rerun starting next year.
Read more about it here.
As I have explained before, I want all the TAST stitches in one (private) collection and will give them the chronological number in the order I learn them.
So now it is time for Whipped Chain Stitch, Version 2, which I will call TAST #146.
By whipping the chain on both sides you get a nice 'knitted' pattern. Or one could take it for the Magic Chain Stitch.
On the reference chart: