Add green onion, garlic, ginger, kiwi, and water to a blender and blend.
To the blender, add brown sugar, sesame oil, soy sauce, white pepper, and cola. Mix to combine.
Marinade the pork
Lay the pork steaks out, and every 1/4 to 1/2 inch, cut half the way thru the meat.
Flip the pork steaks over and rotate 90 degrees. Every 1/4 to 1/2 inch, cut half the way thru the meat.
Place the meat into a large bowl and pour the marinade over the meat. Turn the steaks over to ensure that the marinade contacts all of the meats surface.
Let the meat marinate for at least one hour.
Spicy Sauce
To a bowl, add gochujang, sesame seeds, water, brown sugar, garlic, sesame oil, and soy sauce. Mix and set aside.
Cooking
With your charcoal on one side of your grill, get a fire started.
When the grill is hot place, a cast iron pan on the cold side.
Place your pork steaks onto the grill directly over the coals. Please give them a good sear with a few charred spots on both sides.
Remove from the grill and cut them up. Place them into the cast iron pan. Move the pan over the flame. Please pour the spicy sauce into the pan.
Toss the pork with the sauce. Continue to cook while stirring to prevent burning; when most of the liquid has evaporated, move the pan back to the cold side of the grill.
Continue to cook and continue to stir until the sauce has come caramelization. It's now time to serve.