Why smash the burger patties?
Smashing creates more surface area, which develops a caramelized crust while keeping the center tender. Press firmly at the start, then let it cook undisturbed.
Can I make the special sauce ahead?
Yes. Mix mayo, ketchup, Dijon mustard, pickle juice, paprika, and cayenne pepper up to 2 days ahead. Store in an airtight container in the refrigerator.
What if I don't have a cast iron griddle?
A heavy cast iron skillet, carbon steel pan, or thick stainless steel griddle will work. Avoid non-stick; you need high heat and a metal spatula for proper smashing.
How do I know when the patty is done?
Cook until the bottom is deep golden brown (2–3 minutes), then flip once. Add cheese immediately after flipping and cook another 1–2 minutes until melted and edges are crispy.
Can I freeze smash burger patties?
Form patties just before cooking for the best crust. If you must prep ahead, chill formed patties uncovered for up to 1 hour, then cook immediately.