I have seen this many times in 'stitch catalogs' but there was never any instructions on how to actually make this stitch.
Oh, yeah, wrap the yarn 5-7 times around the hook and pull through all of the loops. Easy! Yeah, right, and I've got some Swamp land in Death Valley for sale.
What few tutorials I've found online were not very helpful, since they all talked about keeping the tension loose, and keeping your mental state calm and... sorry, but I need suggestions that deal with the actual mechanics of creating the stitch....
Solomon’s Knot & Bullion Stitch Tutorials
Single and Double Knot Stitch
Step 1: With the loop on the hook, pull it out to desired length. I'll use 1/2 inch in these instructions.
Step 2: This is the trick to this stitch- Pinch the loop just below the hook with the thumb and forefinger of the hand that normally holds the yarn. Yo, and pull through loop, leaving a gap between the loop and the single thread trailing from the hook.
Step 3: Now, insert the hook into that gap between the loop and the single thread, and work a Sc. (Yo, pull through, then yo and pull through both loops on hook.)
This completes a Single Knot stitch.
To work a Double Knot Stitch from here, you pull the loop on the hook up to the desired length, and repeat the same instructions as a Single Knot stitch.
Step 4: After completing a Single Knot Stitch, pull the loop on the hook up to the desired length. I'm using 1/2" in these instructions.
Step 5: Pinch the 1/2" loop just below the hook. Yo, and pull through 1/2" loop, leaving a gap between the & loop and the single thread trailing from the hook.
Step 6: Now, insert the hook into that gap between the (second) loop and the single thread, and work a Sc. (Yo, pull a loop onto hook, then yo and pull through both loops.)
This completes a Double Knot Stitch.
To continue with this stitch, Sc into the base row of your piece to anchor the Double Knots.
It will look something like this: _/*\_/*\_/*\_
For remaining rows, insert the hook into the Single Crochet knot to anchor each Double Knot stitch. Again, it will look something like this:
From what I found in my various resources, this is primarily used for shawls, and I have seen it in a few doilies.
Bullion Stitch Tutorial aka Crochet on a Roll
What I realized is that anyone can do this, and it really is a beautiful stitch. However, you must understand and accept that this IS NOT a speed crochet stitch. I use it sparingly as an accent stitch.
1. Wrap the yarn around the hook as directed (5-7 times is the standard.)
2. Push the loops up to the Flat Thumb Rest of your hook. Or just slide it up the hook to help loosen the tension of the loops.(Fig. #2)
3. You can use your thumb to roll the loops on the hook, this helps to loosen the tension also.
4. THE BULLION STITCH TIP:
Once you have the loops loosened a bit, insert the hook into the next stitch.
A. Wrap the yarn over the hook, and pull through.
B. Wrap the yarn again and pull through 2 loops. This will isolate the loops that are the most difficult to pull through. (Fig. 4B)
C. With your yarn hand, isolate the loop you just pulled through the first 2 loops. (Fig. 4C)
D. Now pinch the remaining loops on the hook with the thumb and middle finger of your yarn hand.
Grab the Loose Loop (fig. 4D) with the hook, and pull it through the remaining loops.
This stitch is also called Lover's Knot. A lacy, airy stitch, it sounds complicated, but really isn't when you learn one small trick.