In a large skillet, heat 1-2 tablespoons olive oil over medium heat. When hot, crumble the meat into the pan and cook with the onions, garlic, and ginger. When the meat is about halfway cooked, add the carrots, and mushrooms (if using) and cook until the meat is cooked through and the onions are translucent and fragrant.

While the meat is cooking, whisk together the soy sauce, sesame oil, vinegar, and Sriracha (if using). Set aside.

Add the cabbage a couple handfuls at a time, stirring it as it wilts. When the cabbage is cooked, drizzle the soy sauce mixture over the meat mixture and stir to combine and heat through. Serve alone or over brown rice.