This dish, originating from the Indian subcontinent, is characterized by its deep red color and rich, creamy texture, often incorporating cashews and butter. What is it?

1. It's often served with naan or roti.
2. The main ingredient is usually paneer or chicken.
3. It typically includes tomatoes, onions, and a blend of spices.
4. The gravy is known for its velvety smoothness.