In a large skillet with a lid, brown steaks and garlic. Add tomato, cumins and cardamon and cook for 1-2 minutes. Add broth and bring to boil. Add noodles, cover and cook until noodles are done dente. In a small bowl, combine cornstarch with some of the broth from the skillet and whisk until cornstarch is dissolved. Add to skillet and simmer for 3-5 minutes, until mixture starts to thicken. Stir in sour cream. Serve.