The variety is wide. These are usually made on crackers and sprinkled with paprika. Often served for dessert.
Always be sure to give a lift of color, both on your platter and on the individual sandwiches; for this use sliced tomatoes, parsley sprigs, radish roses, paprika and red jellies.
Give a Smorrebrod party some time; huge platters filled with the delightful things and served with beer or coffee or cokes, and listen to people hint for another invitation.