Whether you choose natural or artificial lighting, one thing is for sure, bright and vibrant is the key. Dark and dull food photography is just depressing, so this is what you are trying to avoid. Position your table by an open window to take advantage of that glorious natural light.
If natural light just isn’t available to you, consider purchasing a flashgun, which will help you get consistent levels of lighting for every shot. Direct flash, however, should be avoided as it will produce deep shadows and lots of reflections, so learn how to bounce that flash.