Gratin Dauphinois 

Gratin dafinua is layers of potatoes in cream sauce and Reblochon cheese on top, baked in the oven (recipe from Savoie). There are different versions of gratin, sometimes with bacon, sometimes without. My personal hit is the Alsatian version of gratin with local Muenster cheese (smells horrible, but is more wonderful in gratin than anything else!) and bacon (in Alsace, this dish is also called Tartiflette). Perfect during the cold season: nourishing and warming. It’s not sold at Christmas fairs for nothing! You can usually find it in restaurants for 15 to 17€.