The Pineapple stitch is a type of puff stitch but it has a pinched top. This stitch is quick to work up and has a nice thick fabric, but be warned, it is a yarn eater.
If you would like to know how to crochet the Pineapple stitch for any size project, you can see how here
You can purchase the ad free, printable version of the pattern on Ravelry for just £2.40 which includes a weekly update with the next square
This pattern is written in US terms, but the UK translation is below.
single crochet (sc) = double crochet
For this square you will need a 4mm hook
Start by chaining 32
Row 1. turning chain counts as a stitch. In the 4th chain from your hook make a pineapple stitch (yarn over and pull up a loop 4 times. You will have 9 loops on your hook.
Yarn over and pull your hook through 8 loops. Yarn over and pull through the last 2 loops) chain 1.
*skip a stitch and make a pineapple stitch, then chain 1* repeat between *and*. In the final stitch make a dc.
You will have 14 pineapple stitches
Row 2. Chain 1 and make an alternate turning chain in the first stitch. *In the chain 1 of the row below, make a pineapple stitch.
Repeat between *and* ending in a chain 1 before making a dc in the last stitch.
Row 3-10. Repeat row 2
Sc in each stitch across the top and bottom. Make 3sc in the side of each row. Add an extra sc in the corners for the turn