For texture to show, the image must be taken at a close range. You can see the texture in the above image, shot with a macro lens. The texture of the paint strokes on the wood really add an interesting element to the photographs.
The next way to get texture is just simply adding some material. Old scraps of material, napkins, or place mats could all be used. Texture does so many things for your food photography.
We also use cutting boards for texture. Sometimes there is nothing better than an old used wood boards with many years of cuts running through the grain. This pastry just pops out and you feel like you could reach out and touch the wood.
Great texture for images is so easily found. It just takes a creative eye and knowing what you have laying around the studio.