Modern Britons drink more coffee than tea, according to data published by the British government and visualized by the Open Data Institute. This public data provided insight into British cultural trends, and raised concern about dying traditions. Culinary habits and cultural identity are inseparable. Technology and applications are enabling the collection of rich datasets about what we eat. One food tracking app, MyFitnessPal, has over 80 million registered users worldwide. What could we learn about the world from this data? How can it be used to improve public health and shape our behavior? And, if you are what you eat, what privacy concerns are raised by our appetite for big data?