duchesse potatoes 
plural noun
Mashed potatoes mixed with egg yolk, formed into small shapes and baked.The plate is pretty and precise, arrayed with tiny green beans, carrot and piped-on duchesse potatoes....
- So I had my free lunch (grilled chicken, duchesse potatoes, spinach, artichokes and baby corn, followed by a chocolatey confection with a delicious orange sauce) and then headed back into the office.
- Teenagers, adults, and seniors can enjoy these potato dishes as well as hash browns, potato pancakes, potatoes au gratin, duchesse potatoes, and more sophisticated dishes, such as potato souffles.