Yellow mustard
Yellow mustard is in 29 recipes, and one of them uses it in a way worth knowing about: smeared thinly on the raw patty before it hits the pan. The mustard fries, loses almost all of its sharpness and leaves behind a tangy crust — the technique behind a proper diner-style burger. Used cold as a condiment it stays bright and aggressive. It is also the cheap acid in most burger sauces, doing the same job as vinegar but with body.
Often goes with
Recipes with yellow mustard

TOP 3
McDonald's Big Tasty (Copycat)

TOP 2
McDonald's Quarter Pounder with Cheese (Copycat)

Big Mac Taco

Big Mac Hot Dog

Green Chile Cheeseburger

Croissant Big Mac

McDonald's Quarter Pounder with Cheese Deluxe (Copycat)

Baguette Big Mac

Zachariah's Shack Burger

The Krusty Burger

McDonald's McFeast (Copycat)

Ribwich (The Simpsons)

The Clogger

Viral Bacon Spiral Burger

Duff Beer Sloppy Dog

Boneless Wing Stack Burger

Bologna Sliders with Fried Onions

McDonald's Cheeseburger (Copycat)

Onion Bomb Burger

Juicy Lucy Cheddar Burgers

Cuban-Style Sliders

McDonald's Bacon McDouble (Copycat)

Pickle Crustburger

Copycat Onion Wrapped Flying Dutchman

Air Fryer Burgers

Sloppy Smash Supreme

McDonald's Hamburger (Copycat)

McDonald's McPlant (Copycat)

Mother Nature Burger