Heh, I thought they were LF shots maybe then realised they're SCANNER "photos"... which is almost more impressive, trying to slam down a saucy burger on some glass... Or at least they look that way to me. I don't see where it says exactly what he uses.
Personally, I can not get excited about these pictures. Besides showing the bad food as it really is, and not the flashy professionally cooked ones that you see in advertisements, it just doesn't move me at all...
If these are "scanner photos" it is most likely from a scanning back fitted to an LF camera, and not the burger slammed down on the glass of a flatbed... which might actually have been a more original approach ;-)
I don't think it's a scanning back at all. And he does say in the comments that they were made with a scanner. You can see the toppings are squished against glass and condensation on the glass in some pictures, and strange blueish light that makes the bread look almost mouldy.
I don't like the pictures that much either. I guess technically they're still life but on the other hand, they're just food photos, no matter how ugly or bad the food. It could be described as anti-product photography...
Maybe his next project will be coronary artery studies. You should be able to scan objects approximately an inch or so in height with a flatbed scanner of good quality. I did it with my previous scanner just to see if it would work. Place clear a mylar sheet over the glass to protect it. My daughter needed some quick pictures of jewelry and I didn't have a digital camera. The results were excellent so I tried some other objects that worked as well.