"Biryani rice" typically refers to the rice used specifically for making biryani, a popular Indian rice dish known for its fragrant, flavorful, and often elaborate preparation. The contents of biryani rice can vary depending on the recipe and personal preferences, but here are some common components:

1. Basmati Rice: Basmati rice is the preferred choice for biryani due to its long grains, fragrance, and ability to stay fluffy when cooked. The quality of basmati rice used can significantly impact the texture and taste of the biryani.
2. Aromatic Spices: Biryani rice is often flavored with a variety of aromatic spices such as whole cinnamon, cloves, cardamom, bay leaves, and star anise. These spices impart a rich and complex flavor to the rice.
3. Ghee or Oil: Ghee (clarified butter) or oil is commonly used to sauté the spices and coat the rice grains, adding richness and depth of flavor to the dish.
4. Onions: Sliced or fried onions are frequently added to biryani rice for sweetness and texture. Fried onions are often used as a garnish as well.
5. Herbs: Fresh herbs like cilantro (coriander) and mint are commonly used to enhance the flavor and aroma of biryani rice. They are usually added during the cooking process or used as a garnish.
6. Yogurt: Some biryani recipes call for the addition of yogurt to the rice marinade or cooking liquid. Yogurt helps tenderize the meat (if included) and adds a subtle tanginess to the rice.
7. Saffron or Food Coloring: Saffron threads soaked in warm milk or food coloring are often used to give biryani rice its signature golden hue. This not only adds visual appeal but also imparts a delicate flavor to the rice.
8. Nuts and Dried Fruits (Optional): Depending on the recipe, biryani rice may contain nuts such as cashews, almonds, or pistachios, as well as dried fruits like raisins or dried cranberries. These ingredients add texture and sweetness to the dish.
9. Salt and Water: Basic seasonings like salt are essential for flavoring the rice, while water is used for cooking. The ratio of rice to water and the cooking method may vary depending on the recipe.
10. Other Flavor Enhancers (Optional): Some recipes may include additional flavor enhancers such as garlic, ginger, green chilies, saffron water, rose water, or kewra water to further enhance the taste and aroma of the biryani rice.

Overall, biryani rice is a key component of the beloved biryani dish, and its flavor and fragrance play a crucial role in making the dish memorable and delicious. The specific ingredients and proportions used can vary widely based on regional variations and personal preferences.