By Anthony Demetre
Cooking the potatoes in their jackets helps prevent them from disintegrating when they are fried later.
Preheat the oven to 170°C/gas 3½.
Brown the chicken pieces in the vegetable oil and butter in a heavy-based casserole until nicely golden and caramelized.
While the chicken is browning, start preparing the lyonnaise potatoes: cook the unpeeled potatoes in gently simmeri