What is an authentic Spanish rice recipe?

An authentic Spanish rice recipe is available from the Food Network's website. This recipe calls for lard, long grain rice, tomatoes, chicken broth and onions.

Place 1 tablespoon of lard or solid vegetable shortening in a saucepan over a burner, and turn it to medium-high heat. Once the lard melts, add 1 1/2 cups of long grain rice. Stir the rice, and cook it until the grains start to brown. Add 1/4 of a chopped onion and 2 cloves of minced garlic to the mixture, and stir. Pour 2 whole tomatoes and 1/4 cup of liquid from the 15-ounce can of tomatoes along with 3/4 cup of chicken broth into the saucepan. Once the mixture starts to boil, reduce the burner to medium-low heat, and cover the saucepan. Allow the rice to simmer for up to 30 minutes, adding more chicken broth as needed.

Another authentic recipe starts by toasting 2 cups of medium white rice in 2 tablespoons of olive oil heated in a large skillet at medium-high heat. Add 1 chopped onion and 1 minced garlic clove to the rice, and cook until the onion turns translucent. In a separate pot, simmer 3 cups of chicken stock with 1 tablespoon of tomato paste, 1 pinch of oregano and 1 teaspoon of salt. Add the rice to the chicken stock, and simmer covered for 15 to 25 minutes.