Cornflakes/ˈkɔːrnfleɪks/ Definition 1 of 1Pro Tip 1/3Typical Breakfast Cornflakes are commonly eaten at breakfast, rarely at other meals. I usually start my day with cornflakes. Pro Tip 2/3Served with Milk Most often, cornflakes are enjoyed with cold milk. Could you pass the milk for my cornflakes? Pro Tip 3/3Meal Accompaniment Cornflakes can also be a crunchy addition to yogurt or fruit salads. I like adding cornflakes to my yogurt for some crunch.