The Tunisian Purl Stitch is the companion stitch to the Simple
Stitch
because the 2 stitches are frequently used together.
The purl stitch:
Abbreviation for Tunisian Purl Stitch is Tps
Make a chain and work the first 2 rows in the same way as the
Tunisian Simple Stitch (Tss).
Working the purl stitch(Tps) -cast on row:
Bring supply yarn in front of work and below hook.
Insert hook in vertical loop, YO, and pull loop through vertical
loop.
Continue across row to last vertical loop. Complete last stitch as
for the Tunisian Simple Stitch.
(Some instructions say to work the last vertical as a purl stitch
but I don't like the look of it.)
The return row is the same as for the Tunisian Simple Stitch so won't be shown.

Continue to work the Purl Stitch until the fabric is long
enough
then finish the piece with a Bind Off.
There are 2 ways to bind off the Purl Stitch;
The first way is the same as the Tunisian Simple Stitch bind
off;
The second way is to bind off in Purl Stitch:
Bring supply yarn in front of work and below hook.
Insert hook in vertical loop, YO, and pull loop through vertical
loop and loop on hook.
The image below shows the 4 stitches on the right hand side
finished in Tss Bind Off;
the 4 stitches on the left hand side are finished in Purl Stitch
Bind Off.

An alternate way to cast on for the Purl Stitch starts with the
starting chain;
Bring supply yarn in front of work and below hook.
Insert hook through top loop of 2nd chain from back to front.
YO, and pull loop through chain.
*Bring supply yarn in front of work and below hook.
Insert hook through top loop of next chain from back to
front.
YO, and pull loop through chain.
Repeat from * for each chain loop except the last one.
Insert hook from front to back through last loop as for Tss Cast
On.
This method creates a thicker and firmer starting edge but is a
little tricky to do. Practice, practice...
Continue working the Purl Stitch.
An alternate method of working the Purl Stitch:
Bring supply yarn in front of work and below hook.
Insert hook between stitches and pick up the back vertical
loop,
pull it through the fabric to the front and finish as a purl
stitch.
(personal opinion -I don't like it as well as the first method of
working the Purl Stitch
because it makes a flat, tight fabric and
doesn't combine with the Tunisian Simple Stitch as nicely).
Reminder:
Work much looser than you would with regular crochet.
