10. Place the Celeriac Mash into a mixing bowl, add the egg yolks, whisk into the puree
To freeze, either unbaked or prebaked, place cling wrap to touch the surface of the celeriac and to reduce freezer burn. Place into freezer bags and place into the freezer. To thaw, take out the night before, place in the fridge overnight. Bake or re-heat
Cottage pie or shepherd's pie is a type of savory pie. It is made with minced meat, with mashed potato on top. It comes from the United Kingdom and Ireland. The dish is now popular worldwide.
The name "cottage pie" was first used at the end of the 18th century. See https://simple.wikipedia.org/wiki/Cottage_pie. Reference based on: John Ayto (1990) The Glutton's Glossary: A Dictionary of Food and Drink Terms, Routledge, London