National Bombay Biryani Masala is a popular spice blend used to prepare the flavorful and aromatic Bombay Biryani. It typically includes a mix of spices like cumin, coriander, cardamom, cloves, cinnamon, black pepper, and sometimes dried herbs or chili for heat. This masala gives the biryani its distinct spicy, tangy, and slightly sweet taste, characteristic of the Mumbai-style biryani.