The primary ingredient in risotto is Arborio rice, a short-grain rice known for its high starch content. This starch is crucial for creating the creamy texture characteristic of risotto as it releases during the cooking process. The rice is typically cooked in a broth, gradually added while stirring, allowing the starch to be released and create a rich, velvety consistency. Risotto can incorporate various ingredients like vegetables, seafood, or meats, making it a versatile dish. The cooking technique requires patience and care, resulting in a comforting and flavorful dish celebrated in Italian cuisine.