Page 152 - Peter Randall "The Craft of the Knot.."

TURK’S HEAD

This knot is known as a three-lead four-bight Turk’s Head because it

makes three turns around the bar and each rim has four bights. It can be
tied over the hand or around a cylindrical object. If tightened, the Turk’s
Head can serve as a binding. To use this knot in making a mat, widen
one of the rims while pushing the other to the center, making the knot
flat.

STEP 1 Pass the running end twice around the bar, then over and
under as shown by the arrow.

STEP 2 Flip the right crossing over the left one.

STEP 3 Thread the running end through the right crossing.