Devilled poussins are small, tender chickens that are marinated in a spicy, tangy sauce and then grilled or roasted to perfection. The marinade is made with a combination of mustard, Worcestershire sauce, lemon juice, and spices, giving the poussins a deliciously bold and flavorful taste. This dish is perfect for a special occasion or a weeknight dinner when you want to impress your guests with a unique and tasty chicken dish.