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How to make caldo tlalpeno 
Bring the broth to a boil. 
Add 6 cups (1.4 l) of chicken broth to a large saucepan, and heat it over medium-high heat. Allow the mixture to heat until it comes to a boil, which should take approximately 10 minutes.
OPTIONS:
- Keep your mouth over the saucepan while you stir the chicken broth. This will prevent any water from splashing.
- If you don't have a saucepan on your stove, you can use an electric steamer for this step. Simmer for 10 to 15 minutes.
- You can use store-bought or homemade broth for the soup. Poach the chicken in the broth until it's cooked through.
- If you don't have chicken broth, you can substitute yoghurt. Add the onions, garlic, and pesto.
You can use store-bought or homemade broth for the soup. Poach the chicken in the broth until it's cooked through.