The term "en cocotte" refers to a cooking method where food is cooked in a covered, oven-safe dish, often made of cast iron or clay. It's a French term that translates to "in a casserole" or "in a pot." Turkey Breast en Cocotte, therefore, refers to turkey breast cooked using this method. While there isn't a specific historical origin for this dish, we can explore the general history of cooking methods like "en cocotte." Turkey is not traditionally a staple in classic French cuisine, as poultry like chicken and duck have historically been more popular. However, the concept of slow-cooking meats in a covered dish is a technique that could be applied to various types of meat, including turkey.
Insert your thermometer to be able to monitor internal temperature of breast during cooking.