I like to fry eggs in butter then use the leftover grease to cook the bacon in. Deliciously unhealthy. I go the other way, fry the bacon, reserve to let dry and crisp a bit, and then dump most of the bacon fat out and fry the eggs in that. There is of course option C, fry bacon, use bacon grease to start up your gravy and add some breakfast sausage, break it up and brown in pan, a spoon or two of flour, and some milk, you got some gravy too. Add eggs and toast and you'll be pretty set for the day.