If you're making it from drippings when you've just cooked bacon (the ONLY WAY TO MAKE IT IS WITH BACON, SCREW SAUSAGE) drain off the grease, leave the rest of the crusty stuff in the pan, then return two tablespoons of the grease back in. Add three tablespoons of Wondra flour and cook that at medium for like, fuck, five minutes? Never stop stirring! EVER.
Next, SLOWLY add two cups of milk that have been sitting out to as close to room temp as possible. Once the milk is all in, add tons and tons of pepper and as much salt as seems reasonable. You can always add more later when you eat it. Keep stirring, until you want to die, as it thickens. Basically, you want to be able to run your spoon against the bottom of the pan and have it leave a clean trail for a bit - and it'll thicken up a little bit more after you're done.
Then you eat as much as you can stuff down your gullet and don't share with anyone you're not trying to get to marry you. Because fuck everyone else. Oh wait, you could also share it with someone you just want to fuck you.