Combine stir fry ingredients in a bowl. Set sauce aside.
Step 2
Heat cooking oil a large skillet over medium-high heat. Sauté the onion until beginning to soften, about 3 minutes. Cook the garlic and ginger until fragrant, about 30 seconds.
Step 3
Add the beef, breaking it up with the end of a wooden spoon as it cooks, until browned, about 5 minutes.
Step 4
Once beef is browned, add half of the sauce to the beef, stir frying to evenly coat.
Step 5
Add the cabbage and carrots; continue cooking while stirring until the cabbage is wilted. Taste test and season with salt and pepper, if needed. Stir through the remaining sauce. Serve warm.