Open sandwiches, müsli with filmjölk / yoghurt or milk, and a cup of coffee and a glass of juice or milk is the most common, also porridges and corn flakes. Kalles kaviar is also popular on hard boiled eggs, which can be cut in slices and used as topping on the knäckebröd, then add the kaviar. I prefer boiled cold sliced potatoes on my knäckebröd 🙂