Help! What Is This Roux Recipe ("Pommes du Chefs"?)

[mattdaniels]

At long last I'm catching up on some Sky+ recordings, specifically "The Roux Legacy".

Currently watching the episode featuring Alain and Michel Roux cooking "Beef en Croute".

Michele makes some little potato cases from baked potato, pressed into a tartlet case with piped sides, filled with cauliflower puree. Having paused / rewound this bit a few times, it sounds like he's calling them "Pommes du Chefs" but I'm obviously mishearing it as Google has not heard of such a thing and it's helpfully not mentioned in the recipe (http://uktv.co.uk/food/homepage/sid/9095/arp/2#asr).

Does anyone have the recipe for such a baked-potato based tartlet?

[Checkmate]

"Pommes Duchesse" which are a kind of piped potatoey thing, with butter and egg, and various other things, according to interpretation. In this case apparently put in a skin and filled with cauliflower goop.

[mattdaniels]

Great, thanks.