In a bowl, combine marinade ingredients together. Place burgers in a container where they can sit and marinate like a casserole dish or large bowl.
Allow burgers to marinate at least 15 minutes. Preheat grill to high heat. Grill burgers for 3-4 minutes per side for medium burgers.
Lightly toast hamburger buns.
Meanwhile, combine slaw dressing ingredients in a large bowl. Add coleslaw mix to the dressing and toss to coat. Set aside.
In a small bowl, combine mayo with siracha until well blended. Spread 2 Tbsp siracha mayo over top and bottom buns.
Add Korean BBQ burger and top with a generous amount of the Korean style coleslaw.
Cooking times can vary greatly depending on what kind of grill you are using. To ensure your burgers are cooked through use a meat thermometer to check for doneness. My favorite is the Thermoworks Thermapen but the Thermopop is a good lower priced option.
Can I make the coleslaw ahead of time?
I would not recommend making the Korean style coleslaw ahead of time. It will keep for maybe 2-3 days but is definitely best the day of.