mince the onion .... put 1/2 the onion, chicken, celery, salt, pepper, garlic powder in 10 cups of water. boil for about 40 minutes... chicken should be fall apart tender. if u use a carton of broth add onion, pepper, garlic powder to a full carton of broth and boil
remove chicken and set aside.
make Roux with flour and oil or Bacon drippings. add garlic and onion and stir to release oil into drippings.
add flour Roux mixture to pot of broth .... step back because it make steam up..
while broth and Roux are cooking turn down to medium. and debone the chicken (remove skin and bone and discard.
add both cans of tomatoes, okra, and let cook on Med for about 25 minutes. add chicken, shrimp, and gumbo file.
let cook until shrimp is pink... stir well.