Step 1

Mix together all the sauce ingredients in a bowl and stir until combined. Cover and place in the fridge until the tacos are ready. You can also make this sauce a day or so in advance.

Step 2

Divide beef into 12 equal portions and roll into balls.

Step 3

Place each ball on a tortilla and using clean hands, smash the beef until it's very thin and flattened to the edges of the tortilla. Season with salt and pepper.

Step 4

Heat the vegetable oil in a large skillet over medium-high heat.

Step 5

Add three tacos (if they fit) to the pan, beef-side down. Cook for 2 to 3 minutes before flipping, then lower the heat.

Step 6

Add a slice of cheese to each taco and cover with a lid until the cheese melts (another minute or so), then remove. Repeat with the rest of the tacos.

Step 7

Top with desired toppings (lettuce, pickles and onions, in this case) and sauce, fold into taco shape and enjoy!