| Preparation | Cooking | Start to finish | 
|---|---|---|
| 55 min. | 1 hour 10 min. | 2 hours 5 min. | 
| 1 | Peel and wash 1 kg potatoes. | ![]()  | 
| 2 | Cook in salted boiling water until soft. | ![]()  | 
| 3 | Put in a blender or a vegetable mill... | ![]()  | 
| 4 | ...until you have a classic mashed potato. | ![]()  | 
| 5 | Divide mashed potato in two, salt and pepper the first half, then over a low heat add 100 g  butter and 125 g  cream while stirring constantly. Set aside.  | ![]()  | 
| 6 | Make the duchess potatoes: salt and pepper the other half of the mashed potato, add 3 egg yolks and 3 egg yolks. | ![]()  | 
| 7 | Whip until nicely smooth and yellow. | ![]()  | 
| 8 | Cook 125 g  small pieces of bacon in a frying pan without fat, until they are cooked but not browned. Set aside.  | ![]()  | 
| 9 | Preheat your oven to 180°C or 356°F. Start assembling the ramekins: butter the bottom, and put in a layer of mashed potao about 1 cm or 0.5 inch deep.  | ![]()  | 
| 10 | Add a layer of cooked leek. | ![]()  | 
| 11 | Add some bacon. | ![]()  | 
| 12 | And finish with a layer of duchess potatoes, if possible by using a forcing bag (it's prettier). | ![]()  | 
| 13 | Cook in the oven until duchess potatoes are golden brown (about 20 minutes). | ![]()  | 
| 14 | Serve hot. | ![]()  | 
