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Created by Chef Juliette
Equal juliennes of pale potato and black truffle, bordered with inverse rings and barely veiled in mustard cream: Lyon's demi-deuil pattern brought to the table, exact, aromatic, and generous enough for four.
Salade demi-deuil (half-mourning salad) teaches proportion before ornament. Before you touch a pan, know the one true thing: potato and black truffle are equal partners in the julienne. The potato gives pale tenderness and quiet; the truffle gives blackness, perfume, and earth. Reduce it to a shaving on top and you've made another salad.
The classical entry assumed a garde-manger with cold cooked potatoes, matched tube cutters, and enough whole truffle that its scraps could be treated as ordinary mise en place. It needed neither saucier, permanent stockpot, nor salamander; its brigade scaffolding was spare hands and truffle abundance. At home, two nested piping tips make the inverse rings, a small scale protects the equal ratio, and every dark offcut returns to the julienne. Four servings, one cook, one stove, one evening.
The sauce moutarde à la crème (mustard sauce with cream) should cling in a thin ivory veil, never burying the cut work. No herbs, lettuce, or truffle oil belong here. The step that decides the dish is weighing the finished juliennes after the decorative rings are cut; get that balance right, and the black-and-white dress carries both flavor and meaning.
Quantity
2 medium, about 8 ounces (225 g) raw, yielding at least ½ cup julienne (120 ml / 80 g) plus ornament slices
Quantity
3 to 5 whole, about ¾ cup once cut (180 ml / 100 g)
fresh and ripe, or whole preserved, drained and dried
Quantity
4 cups (960 ml / 960 g), plus more if needed
| Ingredient | Quantity |
|---|---|
| waxy potatoes, such as Charlotte or Yukon Gold | 2 medium, about 8 ounces (225 g) raw, yielding at least ½ cup julienne (120 ml / 80 g) plus ornament slices |
| whole very black winter trufflesfresh and ripe, or whole preserved, drained and dried | 3 to 5 whole, about ¾ cup once cut (180 ml / 100 g) |
| cold water | 4 cups (960 ml / 960 g), plus more if needed |
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