Do you have a week whilst I explain?
2 images, 1 of the food, 1 of the texture (see flickr for link to that).
Added a mask to the food, then selected a feathered path round the obvious oval on the texture. Invert the selection, and fill with black. This then gives you just a soft edged oval bit of food.
Next I blended the two images together using the (I think) color dodge option. This gave quite a contrasty image, which I then used the colorize option in the Hue/Saturation dialogue box. Next, shrink to size, add a bit of sharpening, plus the border, publish and be damned...