Rinse the rice under cold water until the water runs clear.

In a large pot, combine the rinsed rice, chicken, and water. Bring to a boil.

Reduce heat and simmer for about 45 minutes, stirring occasionally, until the rice breaks down and the porridge thickens.

Season with salt, fish sauce, and black pepper to taste.

Ladle the porridge into bowls and top with chopped green onions and cilantro.

Serve with lime wedges on the side.