Cadbury Double Decker Duo consists of two layers – the bottom layer is made from crispy cereal pieces that are coated in nougat and caramel, while the top layer is made from smooth milk chocolate.
The combination of crispy cereal, nougat, caramel, and milk chocolate makes for a sweet and satisfying treat. The Duo version of the Double Decker bar is a smaller size, which can be a good option for those looking for a smaller portion size or to satisfy a sweet tooth on the go.