Add the green flat beans, white broad beans, grated tomatoes, minced garlic, and red dried sweet ground pepper to the pan. Stir everything together and cook for another 5 minutes, allowing the vegetables to soften slightly.
Incorporate the Rice:
Sprinkle the rice evenly over the ingredients in the pan. Stir to coat the rice with the flavorful oil and ingredients. Let it cook for a minute or two.
Pour in the Saffron Infusion:
Strain the saffron infusion to remove the saffron threads and add the colored liquid to the pan.
Add Water and Rosemary:
Pour in the 4 cups of water, add the rosemary sprig, and season with salt to taste. Gently stir to combine all the ingredients.
Simmer and Cook:
Reduce the heat to medium-low and let the paella simmer for about 15-20 minutes without stirring. You can rotate the pan occasionally to ensure even cooking. The goal is to create a socarrat, the crispy crust that forms at the bottom.
Check for Doneness:
Taste the rice for doneness. If it's still slightly undercooked, you can add a bit more water and continue cooking for a few more minutes.
Rest and Serve:
Once the rice is cooked and has absorbed most of the liquid, remove the paella from the heat. Cover it with a clean kitchen towel and let it rest for 5-10 minutes before serving.
Serve:
Serve the Valencian paella hot, garnished with fresh rosemary sprigs if desired.
Enjoy your delicious Valencian paella, a true taste of Spain!