Page 125 - Peter Randall "The Craft of the Knot.."

STEP 1 Make a Timber Hitch (see Chapter 10) at one end of the
bundle. Fold a bight in the running end close to the Timber Hitch and
then pull another bight through it after first passing it around the
bundle.

STEP 2 Continue passing new bights around and through the previous
bight. To finish, pull the entire running end through the last bight

(instead of another bight) and secure with two Half Hitches (see Chapter
4).

Though it may look complicated, Chainstitch Lashing ties quickly once
you get the knack.

GRANNY KNOT

The Granny Knot is a variation on the Reef Knot (see Chapter 6), except
that the two Half Knots are the same.