Chimole From Yucatan

5 pieces of chicken 
Salt and pepper   
1 clove garlic
oregano 
black seasoning "chimole yucateco"
4 tomatoes  
1 / 2 Onion 
Olive Oil 
1/2 cup Maseca

Boil chicken in 3 cups water for 15 minutes, when it starts to boil remove foam and add salt, pepper (to taste), garlic and oregano and cook for 15 minutes and add the seasoning 'chimole'. In another saucepan fry with olive oil  4 tomatoes with 1 / 2 onion, and add just the half of it it to the chicken and let cook for 10 minutes then  dilute maseca in half cup water and add the chicken until it thickens. Finally,  serve it  in a bowl, add tomato sauce as a garnish.