
How to do it
Ch 3, YO, insert hook in 3rd ch from hook, YO, pull up a loop, YO, pull through 1 loop on hook (ch made), YO, pull through 3 loops on hook (first FHDC made), *YO, insert hook into the ch made at the base of the stitch, YO, pull up a loop, YO, pull through 1 loop on hook (ch made), YO, pull through 3 loops (second FHDC made). Rep from * until you have the desired number of stitches.
Visual Steps

Ch 3

Yarn over

Insert hook in 3rd ch from hook

Yarn over

Pull up a loop

Yarn over

Pull through one loop on hook (ch made)

Yarn over

Pull through all three loops (first FHDC made)

Yarn over

Insert hook into the ch made at the base of the stitch

Yarn over

Pull up a loop

Yarn over

Pull through 1 loop (ch made)

Yarn over

Pull through all three loops (2nd FHDC made). Repeat from step 10