The standard boiling time for a Black Chicken Soup is approximately 1 to 2 hours. This duration allows the chicken to become tender and the flavors to meld together. The cooking process typically involves bringing the soup to a boil, then reducing the heat to a simmer, and allowing it to cook slowly. The exact time can vary depending on the size and age of the chicken, as well as the desired level of tenderness.

The reason for this cooking time lies in the need to break down the connective tissues and collagen in the chicken, which contributes to its tenderness. As the chicken simmers, these proteins gradually soften and become more palatable. Additionally, the slow cooking process allows the aromatic herbs and spices used in the soup to infuse the chicken and broth with their flavors.

Research from the Journal of Food Science and Technology indicates that the tenderness of meat is influenced by the cooking temperature and duration. A study published in 2019 found that cooking chicken at a lower temperature for a longer period of time results in greater tenderness compared to higher temperatures with shorter cooking times. This aligns with the traditional method of boiling Black Chicken Soup, which emphasizes slow cooking at a gentle simmer.