Which of the following is a key ingredient in the Kale and Romaine Caesar?

The key ingredient in the Kale and Romaine Caesar is roasted brussels sprouts. This unique twist on the traditional Caesar salad incorporates the earthy flavor and tender texture of roasted brussels sprouts, enhancing the overall dish and adding depth to the flavor profile. The use of kale and romaine provides a sturdy, crunchy base, while the roasted brussels sprouts introduce a distinct taste that complements the creamy Caesar dressing perfectly. This variation not only elevates the salad but also aligns with current culinary trends that favor incorporating more vegetables and unique ingredients into classic recipes.