What is a plancha burger?

Chef's answer
They use a chapa or plancha, which is essentially a piece of tin or cast iron placed over the coals. The coals heat the metal just as a stove heats a pan, but when you close the lid over the pan and coals, the familiar smoky taste of barbecue is encapsulated into the meat.
Frequently asked Questions 🎓
A Plancha, fire plate or hot-plate. You can't do a smash burger on a regular grill grate because everything will just land in the coals. ... Not only does this allow you to apply downward pressure onto the patty, it's also great for scraping debris off the plancha at the end of the cook..
They use a chapa or plancha, which is essentially a piece of tin or cast iron placed over the coals. The coals heat the metal just as a stove heats a pan, but when you close the lid over the pan and coals, the familiar smoky taste of barbecue is encapsulated into the meat.
How to grill on a plancha: Place the plancha over high heat until very hot, about 4 minutes. Then brush the grill with olive oil and sprinkle with coarse salt (same procedure whether using a flat or ridged grill pan). Place food to be grilled on the plancha. Keep the heat on high to get a good sear on the food.
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