Celeriac, apple & horseradish mash

Directions

1. 1
   Put the celeriac in a large pan of water and bring to the boil. Cook for 15-20 mins until tender, adding all the apple apart from a few pieces, for the final 5 mins.
2. 2
   Drain well and return to the pan, then mash until smooth. Stir through the horseradish and some seasoning.
3. 3
   Garnish with the remaining apple slices, if desired.