Double Curl Stitch

The beautiful wavy surface appers when you nalbind this stitch to and fro, ie you turn the work at the end of each row like when knitting or crocheting.

Same stitch, but worked as in a tube.
Front side.

Same Stitch, but worked in a tube.
Reverse side.

Double Curl Stitch
Hansen's Notation (modified)
UOO/UU\O/UOO B1

1 thumb loop, 2 loops onto needle from behind thumb. Pick up one of those two onto the needle for the second time.
At the end needle under thumb loop, and under needle yarn.