This casserole can be eaten on its own, but this is also an excellent side dish for meat, fish or poultry.
Very typical Finnish food, though we usually make potato mash without celeriac. However, celeriac gives the mash just a new and nice flavor.
Mashed potatoes and celeriac is an excellent and tasty side dish for both meat and fish. And why not for poultry too.
Celeriac goes with a number different foods because ot its nice, mild taste.