Mustard(Fisher's is the preference in the Chesapeake Bay)
Instructions
Heat up how ever many buns you need in your oven. Many people like to double up their burgers so you may only be heating up a couple buns for this recipe. Heat until just crispy on the outside and still soft on the inside.
Divide your ground beef (preferably sirloin) into quarters. Roll each of the 4 quarters into balls, and flatten ever so slightly so they make big, fat ovals, more like the shape of a round mango. Sprinkle these with your favorite steak seasoning and set aside.
Heat up a flat cast iron pan. Throw in a couple pats of butter and watch it sizzle.
Fry on medium high heat for about 3-5 minutes until it browns. Then flip and continue to fry for 2 more minutes. Then SMASH. The bigger the "smash device" the better. A very large spatula works as well as the flat side of a meat tenderizer.
Drizzle a small amount of Worcestershire sauce on each patty at top with butter. Let that melt a bit then flip the burgers. They should have a little pink to them at the point. Add cheese slices for those who want that.
Now start the layering. Our typical smash burger includes lettuce, tomato, red onion, pickles, ketchup and Fisher's Mustard. Serve!