In a small mixing bowl, COMBINE sour cream, half the sriracha, salt and pepper to taste; SET aside.
In a skillet at medium high heat, ADD a drizzle of olive oil; ADD green onions, cabbage, salt and pepper to taste; COOK, STIRRING, until softened, about 5 minutes.
ADD ground beef, garlic and additional sugar; COOK, STIRRING to break up pieces, until browned, about 5 minutes.
STIR in sesame oil and soy sauce; SEASON with salt and pepper to taste..
WRAP tortillas in damp paper towels until warm and pliable, about 30 seconds.
For each serving, spread tortilla with sriracha/sour cream mix, add ground beef mixture, pickled veggies, and cilantro leaves; ADD sriracha to taste.
Per Serving (excluding unknown items): 1243 Calories; 58g Fat (42.1% calories from fat); 47g Protein; 132g Carbohydrate; 9g Dietary Fiber; 119mg Cholesterol; 2064mg Sodium. Exchanges: 8 Grain(Starch); 3 1/2 Lean Meat; 1 Vegetable; 0 Non-Fat Milk; 9 1/2 Fat; 0 Other Carbohydrates.