Believe it or not, food has just about everything to do with writing books! When I know I am going to have a full day ahead with writing, I start my day off giving my brain plenty of energy to work. When writing a book, unexpected ideas and plots always come to when the mind is wide awake. Every Morning for me is time to enrich my mind. My favorite meal of the day is breakfast! I wake up with my stomach growling, and my mind starving for some brain food. Then it is time to get started. When I am about to write an intense part of my plot, and want to make it really stand out, I drink a cup of tea. This is what works for me.
Check out this website about brain food: http://www.scholastic.com/resources/article/its-brain-food
