Rutmus
I love this, though i will admit that for some it is an acquired taste. I like to top mine with lingon berry sauce, whole cranberry relish would do. It is pronounced 'rootmoose' or 'rut-muss' depending on where the speaker is from. I am from the states so i tend to say 'rootmoose'.
Steps
Boil potatoes until tender.
In second pot boil turnips until fork tender.
Drain well.
Combine all ingredients in mixer.
Blend until smooth.
Serve hot.
Ingredients
potato, turnips, butter, cream, salt and pepper