You can also freeze turnips before mashing them by boiling diced turnips in hot water for at least 2 minutes, then put the turnips in the ice water to cool. Drain and pat dry with paper towels to ...

Main-crop turnips will keep in a cool, dark place for much longer. To freeze early-crop turnips, trim, peel and dice them, then blanch, cool and pack into freezer bags. Cook from frozen.