Recipe(tried): Vietmanese Noodle Soup

I got this recipe from a lady I used to work
with. She had never written down a recipe,
so she just told me how she made it.

Vietmanese Noodle Soup

Heat a 4 quart pot and add 1 tbsp. vegetable oil
and get it hot. Chop 1/2 of a big onion and
stir fry. Take the fat off one chicken breast and
slice it the boneless chicken breast meat real
thin. Cook in oil and onion until meat is white.
Add 4-5 cups water and boil. Add onion salt or onion
powder, black pepper, green onion and cilantro
and sliced ginger. Then boil for 5 minutes. Add
a package of clear rice noodles and 1/2 tsp. accent.
Season to taste with salt and pepper. I think she
may have also used a little bacon fat when sauting
onion. It always had such good flavor.