In a large stew pot over medium-high heat, add 4 tablespoons olive oil. Add onions, carrots, celery, garlic, cornstarch, tomatoes, turmeric, and red pepper flakes. Saute for 5 to 7 minutes.
Add the stew beef and the beef stock. Add salt and pepper to taste. Reduce heat and let stew simmer for 1 hour 30 minutes. Stir periodically. Serve hot.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.