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1
Preheat the oven to 525 degrees, or the hottest temperature possible.
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2
Place a baking sheet in the oven and let heat at least five minutes.
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3
Holding the knife at an angle, cut the salmon into very thin slices as if you were slicing smoked salmon.
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4
Lay out a length of heavy-duty aluminum foil or nonstick kitchen parchment on a flat surface.
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5
Invert a 12-inch round baking dish, such as a cake pan, on the aluminum foil and trace around the pan with a sharp knife to cut away one round.
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6
Continue until you have four foil rounds.
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7
Scrape and trim the carrots and cut them crosswise into 1-inch lengths.
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8
Cut each length into thin slices.
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9
Stack the slices and cut them into very thin matchlike strips.
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10
There should be about 3 cups.
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11
Cut off and discard the bottom of each mushroom.
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12
Cut the caps crosswise into thin slices.
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13
There should be about 2 cups.
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14
Heat two tablespoons of butter in a saucepan and add the mushrooms.
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15
Sprinkle with lemon juice.
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16
Cook, shaking the skillet and stirring, about 1 minute.
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17
Add the carrots, scallions and salt.
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18
Cover.
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19
Cook 7 to 8 minutes.
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20
Add the tarragon and stir.
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21
Cover and set aside.
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22
Place each round of paper or foil on a flat surface and brush all over with butter.
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23
Spoon an equal portion of the carrot mixture slightly off center on each round, leaving an ample margin for folding over.
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24
Cover the vegetable mixture with slices of raw salmon, leaving them slightly overlapping but making a compact row that just covers the vegetables.
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25
Sprinkle each serving with 2 teaspoons of finely chopped shallots and one teaspoon of wine.
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26
Sprinkle with salt and pepper.
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27
Fold over each round of foil or paper to completely enclose the filling.
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28
Fold and pleat the margins of each round over and over to seal the filling as tightly as possible.
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29
Arrange the packages neatly in one layer on the preheated baking sheet.
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30
Place in the oven and bake 7 minutes.