Mix the Worcestershire sauce (or your favorite), a dash of salt, and pepper into the ground beef until everything is well combined.
Preheat the cast iron skillet to medium heat making sure it has enough oil, lard, tallow, or ghee on it.
Separate and shape the meat into 4 balls; no, not patties, We're going to smoosh these into the cast iron. Place on the preheated pan.
If the patties do not sizzle when you place them, the pan is not hot enough yet. Wait and try again. Once they are on the pan and sizzling, take your metal spatula and lean into each round until it's roughly 1/2 inch thick. There are cast iron devices meant for this task, but a spatula works just as well. Once flattened, season the top side with a healthy dose of salt; no pepper yet as it will burn once flipped. We are not smashing them again though as doing so now would release all the juices you actually want in your burger.
Cook for 3 to 5 minutes before flipping and cooking an additional 3-5 minutes, depending on your preference. If you like your burgers well done, cook them a little closer to the 5-minute mark for each side. Once flipped, season the top side with another dash of salt and pepper.
If cheese is in your burger's future, then add it now to give it time to melt.
Remove from the heat, plop them on your favorite bun, and load them up with your favorite fixings, serve and enjoy.