# Boil the
chicken breast over medium heat to soften it at first.
# Meanwhile, put the vegetable oil and the butter into a separate bowl. When the mixture turns to hot, add the finely diced
onion in it.
# When the
onion turns to transparent, add the
flour into the mixture. Sauté, until the smell of the
flour goes away.
# Add 8 cups of
chicken broth in it. Boil it over medium heat for 20 minutes.
# Meanwhile, prepare the liaison of the soup. Whisk the mixture of egg,
milk and
flour, until the mixture smoothens.
# Pour all of the liaison onto the soup at once, and cook the soup for 20 more minutes by stirring it time to time. At the end of the cooking time, strain the soup to make it smooth.
# Place the pot over the medium heat again, and add picked
chicken and salt in it. Cook it for 10 more minutes.
# Serve it hot. Lemon juice may be added into this soup also.
