Photo: Iain Bagwell; Styling: Emma Star Jensen
YieldsServes 4
At Umami Burger restaurants in Los Angeles and San Francisco, these juicy, full-flavored, mildly spicy burgers are seasoned with Umami Dust and Umami Master Sauce (order at umami.com/shop). Soy sauce makes a good substitute.

How to Make It

Step 1
1

Broil chiles on a rimmed baking sheet, turning as needed, until blackened on all sides, about 10 minutes. Let cool. Peel, then cut open and remove stem and seeds. Finely chop chiles. Put in a medium bowl and stir in 1/4 tsp. salt. Mix mayonnaise with garlic in another medium bowl.

Step 2
2

Heat a grill or griddle to medium (350° to 450°). Mix beef with remaining 1/2 tsp. salt in a large bowl until just combined. Divide into 4 portions and form each into a 1/2-in.-thick patty with a slight depression in the center.

Step 3
3

Oil cooking grate or griddle with a wad of oiled paper towels. Grill burgers, turning once and sprinkling with about 1/2 tsp. soy sauce on each side, until done the way you like, 7 to 8 minutes for medium. During the last minute, lay a cheese slice on each burger to melt it.

Step 4
4

Meanwhile, lightly butter cut sides of rolls and toast on grill or griddle, about 2 minutes.

Step 5
5

Spread garlic mayo on cut sides of rolls. Add burgers, topping each with about 2 tbsp. chile mixture.

Ingredients

 3 Anaheim chiles
 3 poblano chiles
 3/4 teaspoon kosher salt, divided
 1/2 cup mayonnaise
 1 teaspoon minced garlic
 1 1/2 pounds ground beef (80% lean)
  About 1/4 cup butter
 4 slightly sweet rolls, such as Hawaiian sandwich or Kaiser
 4 to 6 tsp. soy sauce
 4 slices white American cheese

Directions

Step 1
1

Broil chiles on a rimmed baking sheet, turning as needed, until blackened on all sides, about 10 minutes. Let cool. Peel, then cut open and remove stem and seeds. Finely chop chiles. Put in a medium bowl and stir in 1/4 tsp. salt. Mix mayonnaise with garlic in another medium bowl.

Step 2
2

Heat a grill or griddle to medium (350° to 450°). Mix beef with remaining 1/2 tsp. salt in a large bowl until just combined. Divide into 4 portions and form each into a 1/2-in.-thick patty with a slight depression in the center.

Step 3
3

Oil cooking grate or griddle with a wad of oiled paper towels. Grill burgers, turning once and sprinkling with about 1/2 tsp. soy sauce on each side, until done the way you like, 7 to 8 minutes for medium. During the last minute, lay a cheese slice on each burger to melt it.

Step 4
4

Meanwhile, lightly butter cut sides of rolls and toast on grill or griddle, about 2 minutes.

Step 5
5

Spread garlic mayo on cut sides of rolls. Add burgers, topping each with about 2 tbsp. chile mixture.

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