First, you have to start saving the drippings from your bacon. I use an old percolator coffeepot to put my drippings in. My Momma uses a real bacon grease holder. Her container separates out the bits of bacon from the liquid grease. Personally, I like all of those little pieces of bacon because they add character to my dishes.
Some folks cook up a bunch of bacon in their cast iron skillet and leave the grease sitting there.
The next time they cook, the grease is already in the pan and ready to go. Just heat up the skillet with the grease and then plop in your eggs or hash browns. If the appearance of bacon grease is unappealing to you, just don't look directly at it when you are cooking or you might change your mind. Quickly spoon it into your dish and stir while you look away. You may also wonder about the shelf life of bacon grease.