Heat a 12 inch skillet with a tablespoon of sesame oil over medium high heat. Add the beef and cook it. As the beef cooks, break the meat up into small pieces with your spatula. Let the beef cook until it is lightly browned, about 4 minutes.
Once the beef is lightly brown, add your pressed garlic, ground ginger, and chili flakes. Turn the heat to high and cook the beef until it is browned and crisp about 2 to 3 minutes.
When the beef is brown and crisp, you can stir in the soy sauce, white vinegar, sugar substitute and Siracha. Cook another minute, stirring so the ingredients get well incorporated. They will thicken slightly. Turn the heat off and add a squeeze of lime.
Serve over cauliflower rice and top with scallions and cilantro if desired. Enjoy!