Bread is a very important part of every meal in Finland and is made from grains like barley, oat, rye and wheat, or by mixing different grains and flours. Rieska is a type of Finnish flat bread belonging to Finnish Cuisine. Perunarieska is a category of Rieska which is baked using barley, oats, whole meal (or a combination of flour) with mashed potato. This is unleavened soft bread and traditionally served warm with butter along with milk. This can also be served with herbed cheese spread and any salad of your choice. It makes a good pair with hot soups / omelets too.