Jul 14 2026
Restaurants›Blacklock Soho›Blacklock Burger Recipe

Blacklock Burger Recipe

Inspired by Blacklock Soho
Time40m
Serves2

A double cheeseburger Blacklocked with onions caramelised in a healthy glug of vermouth.

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Ingredients

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Burger Patties

Caramelized Onions

Burger Assembly

Method

Preparing the Patties

  1. 1

    Mixing the Patty Ingredients

    In a mixing bowl, combine the ground beef, salt, and black pepper. Mix gently until just combined.

  2. 2

    Forming the Patties

    Divide the mixture into two equal portions and shape them into burger patties, making a slight indentation in the center of each patty.

Caramelizing the Onions

  1. 3

    Slicing the Onions

    Thinly slice the onions and set them aside.

  2. 4

    Cooking the Onions

    In a skillet, heat the olive oil over medium heat. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, for about 10-15 minutes until the onions begin to soften and turn golden brown.

  3. 5

    Deglazing with Vermouth

    Add the vermouth to the skillet and continue cooking for another 5-7 minutes until the onions are fully caramelized and the vermouth has evaporated. Remove from heat.

Cooking the Burgers

  1. 6

    Grilling the Patties

    Preheat a grill or skillet over medium-high heat. Cook the burger patties for about 4-5 minutes on each side, or until they reach your desired doneness.

  2. 7

    Adding Cheese

    During the last minute of cooking, place two slices of cheddar cheese on each patty to melt.

Assembling the Burger

  1. 8

    Toasting the Buns

    Lightly toast the burger buns on the grill or in a toaster.

  2. 9

    Building the Burger

    On the bottom half of each bun, place a lettuce leaf, followed by a tomato slice. Add the cheeseburger patty topped with caramelized onions. Drizzle with ketchup and mustard, then place the top half of the bun.

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