Method:
Heat oil in a large pot over medium-high heat. Add onion and cook, stirring occasionally, until golden brown, 8 to 10 minutes. Add chicken, garlic and salt; continue cooking until starting to brown and most juices are cooked away, about 15 minutes more. Add wine and cook, scraping up any browned bits, until reduced by half. Stir in broth and mangoes; bring to a boil. Cover, reduce heat to medium-low and simmer until chicken is cooked through, about 25 minutes.