caption: This is one of our all-time favorite cakes ever. A friend of ours in Germany asked us if we could make a hamburger cake for her daughter's birthday. She had all of the directions that she had saved from a magazine. It was such a hit the first time we made it, we have used it for teen birthdays ever since and used the idea to win cake competitions at our local church. We perfected the decorations, so now we airbrush the ``bun'' to add depth to the color, we ruffle the lettuce and make the tomato slices show the sections with the seeds completely visible.