What is served alongside the roasted chicken in the dish?

The answer highlights that the dish features truffle mashed potatoes as a complementary side to the roasted chicken. This pairing is particularly effective because truffle mashed potatoes bring a rich and decadent flavor profile that enhances the overall dining experience. The earthiness of truffles complements the savory notes of the roasted chicken, creating a harmonious balance on the plate. Additionally, mashed potatoes are traditionally a comforting and widely appreciated side, making them an ideal addition that appeals to various tastes.

The other options, while they may add unique flavors, do not serve as the primary side for this particular dish. Cajun spices would be more relevant if the chicken were prepared with a bold, spicy seasoning. Confit garlic butter is a flavorful sauce that would typically be used to enhance the chicken itself rather than be served as a side. Braised ribs, while delicious, represent a completely different dish and would not be served alongside roasted chicken in a cohesive meal presentation.