Ox Tongue

From 'Mexico The Cookbook' by Margarita Carrillo Arronte
 
Ox Tongue A more unusual ingredient, the basis of this recipe is Ox Tongue. With a Pumpkin Seed Sauce to create a truly unique flavour profile. If Ox is unavailbe, replace with Beef.

Ingredients  
Recipe
  1. Put the chillies in a small bowl with enough hot water to cover them and soak for 15 minutes.
  2. Put the tongue, bay leaves, and a pinch of salt into a large saucepan and pour in enough water to cover. Bring to a boil, reduce the heat, and simmer for 3 hours.
  3. Put the pumpkin seeds into a blender. Add the chillies and garlic and process until thoroughly combined. Pour the mixture into a pan.
  4. Put the corn flour into a bowl and add just enough water to make a thick paste.
  5. Set the pan of the chilli and pumpkin seed mixture over medium heat and stir in the corn flour paste and ground peanuts.
  6. Cook, stirring continuously, until the mixture comes to a boil. Reduce the heat to low and simmer, stirring frequently, for about 2 hours.
  7. Meanwhile, remove the tongue from the pan and peel off the skin. Let cool and slice.
    1. Reserve the cooking liquid.
  8. When the sauce has finished cooking, stir in enough of the reserved cooking liquid to make a sauce with the consistency of gravy.
  9. Add the tongue and heat it through gently for 20 minutes, until it is piping hot.