Directions

• Stir the sour cream and all-purpose flour together in a small bowl until smooth and set aside. In a separate small bowl, mix together the cornstarch and water to make a paste.
• Combine the chili powder, coriander, ginger, bouillon cubes, cardamom, tomatoes, water, nutmeg, salt and pepper in a medium saucepan; bring to a boil over high heat. Slowly add the cornstarch paste to the tomato mixture, stirring constantly; simmer for 2 minutes. Remove the saucepan from the heat and slowly stir in the sour cream and flour mixture.
• Arrange the onions across the bottom of a slow cooker, lay the shanks on top of the onions and pour the prepared tomato mixture over the meat. Place the carrots, potatoes and mushrooms on top of the sauce.
• Cover and cook in the slow cooker on High for 8 hours.