Step 1Bring two medium saucepans of salted water to a boil. Add the potatoes to one pan and the turnips to the other. Bring both back to a boil and cook until tender, about 15 to 20 minutes. Drain and place each batch of vegetables in a colander over the hot pot. Allow to dry (off the heat) for 15 minutes.
Step 2Mash the potatoes and turnips together with the butter, making sure the butter is evenly distributed. Stir in the chopped chives, season with salt and pepper, transfer to a hot dish and serve warm.