The present invention relates to a cereal-based product, which changes or loses colour upon addition of an aqueous liquid. The invention further relates to a process for obtaining the product and to a breakfast cereal comprising two types of cereals. The colour change is makes the consumption of breakfast cereals more interesting for children and adults. The cereal may be prepared by applying different coatings on a classic extruded cereals base, whereby an outer coating provides a certain colour and is essentially washed off upon addition of milk.