These braised oxtail and Gruyere sandwiches are a decadent and flavorful twist on the classic grilled cheese. The oxtail is slow-cooked until tender and then shredded, creating a rich and savory filling. The Gruyere cheese adds a creamy and nutty flavor that pairs perfectly with the oxtail. Served on crusty bread and toasted until golden and melty, these sandwiches are a gourmet treat for any cheese and meat lover.