The primary ingredient in Spanish paella is rice. Paella is a traditional Spanish dish that originated in the Valencia region, and it is characterized by its vibrant color and rich flavors. The dish typically features short-grain rice, known for its ability to absorb flavors while remaining firm. While rice is the key ingredient, paella can include various proteins such as chicken, rabbit, and seafood, along with an array of vegetables and saffron, which gives it a distinctive yellow hue. Depending on the variant, regional ingredients may vary, making paella a versatile and beloved dish in Spanish cuisine.