Wiktionary
n. A kind of casserole from southwest Nova Scotia or Acadia, made from potatoes that are grated, squeezed through a cheesecloth, and covered with a meaty broth.
Wikipedia
Rappie pie is a traditional meal from southwest Nova Scotia or Acadia. It is sometimes referred to as "rapure pie" or "râpure". Its name is derived from the French "patates râpées" meaning "grated potatoes". It is a casserole-like dish traditionally formed by grating potatoes, then squeezing them through cheesecloth. This removes some of the water from the potato solids. The liquid removed is replaced by adding hot broth made from chicken, pork or seafood along with meat and onions, and layering additional grated potatoes over the top . Common meat fillings include beef, chicken, or bar clams. Currently most people will put the potatoes in a juicer to remove the liquid. The rest of the process remains the same.