Makhani sauce is a rich and creamy tomato-based sauce commonly used in Indian cuisine. It is made with a combination of tomatoes, butter, cream, and a blend of aromatic spices. The sauce has a smooth and velvety texture with a slightly sweet and tangy flavor. Makhani sauce is often used as a base for popular dishes like butter chicken and paneer makhani. It adds a delicious and indulgent taste to any dish it is used in.