Rosolli

In Finnish cuisine, rosolli is a salad eaten mostly as a cold side dish, in particular as part of the traditional Finnish Christmas meal. Rosolli is made of cooked, diced root vegetables, especially beetroot, carrot and potato, often combined with one or more of pickled cucumber , raw onion and apple. Variations may also include additional ingredients such as pickled herring or boiled egg, in which case the salad is more likely served as a starter (appetizer) rather than a side dish to a main course. Rosolli is often served with a dressing made of whipped cream or a soured cream product available in Finland called kermaviili (being a type of viili made with sour cream), laced with vinegar or the pickling liquid of beetroot, which also colours the cream pink.

Source: Wikipedia