Put all ingredients in a pressure cooker at high heat
When the pressure cooker starts releasing steam, put in low heat and leave it for 15 more minutes
Carefully open the pressure cooker and remove the chicken from it
With the pressure cooker open, continue cooking the other ingredients until the broth is reduced to about one cup (i.e., 1/3 of original amount of water)
When it is done, remove from the pressure cooker and sift the broth
Shredding the chicken
Remove the bones from the chicken breasts
Shred the chicken meat at high speed in a mixer
Preparing the fillings
1 onion diced in small pieces
2 tomatoes diced in small pieces
3 cloves of garlic
1 tablespoon of butter
In a regular pan, braise the onion and garlic in the butter
When the onion is transparent, add the tomatoes, chicken meat, broth, and the palm heart
Leave it cooking for 5 minutes
Add the flour and keep mixing (to prevent lumps getting formed)
Leave it at rest for later
Making the dough
1 yolk
4 cups of flour
1 teaspoon of salt
1 teaspoon of baking powder
7 ounces of (cold) butter
Put all ingredients in a mixer
When the mixture is all well blended, make a ball
Remove a quarter of the ball and leave it for later
Put flour on the table, and flatten the dough using a rolling pin, until it is about the size of the pie baking dish
Roll the flatten dough around the rolling pin, and carefully put it in the pie baking dish
Press the dough on the border of the pie baking dish and remove the excess
Using a fork make a set of small holes on the dough
Add a cookie baking sheet on top of the dough, and add ceramic beans on top
Put it in a pre-heated oven at 350 F for about 20 minutes
Assembling the pie
When the dough is fully cooked, add the fillings on it
Flatten the saved quarter of dough using a rolling pin, and cover the fillings
Mix an egg yolk with a bit of butter and spread the mixture on top of the cover
Take it to a pre-heated oven at 350 F for about 40 to 45 minutes (until the top is golden brown)