While sourdough and other whole grain breads are extremely nutritious, they cannot provide everything. And sure, it might sound easy to eat the same thing for the rest of your life, but, for most people, it’s also probably incredibly boring. But if you want to simplify your diet, don’t fret. There’s plenty of simple food combinations, like rice and beans, yogurt and nuts, and pasta and vegetables that provide a more complete nutritional profile. But even with those, it’s always best to change those up as well. Eating the rainbow is still a pretty foolproof method.