DIRECTIONS:
To make the slaw:
- In a large bowl, combine hot mustard, grated garlic, grated ginger, gochujang, rice wine vinegar, and soy sauce. Whisk until smooth.
- While whisking, stream in the sesame oil, followed by the olive oil. Whisk until emulsified.
- Stir in the slaw mix and green onion. Set aside.
To make the gochujang mayo:
- In a small bowl, whisk together mayonnaise and gochujang sauce.
To make the beef filling and tacos:
- In a medium bowl, whisk together grated garlic, grated ginger, brown sugar, soy sauce, chili garlic sauce, and 1 tbsp of sesame oil. Set aside.
- Heat the remaining 2 tbsp of sesame oil in a large saute pan over medium heat. When the oil is hot, add the red onion and cook for about 3 minutes, until softened.
- Add the ground beef and break up with a wooden spoon. Cook, stirring occasionally, until meat is browned all over.
- Add the sauce to the skillet and bring to a simmer. Cook for 7-8 minutes, until the sauce has reduced and slightly thickened. Taste and season with salt and pepper if needed.
- Spoon meat into tortillas, along with some of the slaw, and garnish with lime, cilantro, sliced green onions, and gochujang mayonnaise.