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1
Trim leeks of hard green parts, split in half, wash, and roughly chop.
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2
Bring a saucepan of salted water to a boil.
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3
Add in leeks, and cook till tender, about 4 min.
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4
Drain, and transfer to a blender.
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5
Add in butter; season with salt and pepper.
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6
Puree; transfer to a hot place.
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7
Place dry mushrooms in a spice mill or possibly coffee grinder; grind to the consistency of coffee.
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8
Transfer to a plate.
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9
Place egg in a bowl; add in some salt and pepper, and beat lightly.
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10
Place flour on a plate.
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11
Dip lamb very lightly in flour; shake off excess.
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12
Dip into egg, then into mushrooms.
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13
Pat mushrooms to adhere so they coat the lamb heavily.
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14
Chill up to 2 hrs.
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15
Heat oven to 500 degrees.
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16
Heat 2 Tbsp.
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17
extra virgin olive oil in a 10-inch skillet; add in the shiitake mushrooms, garlic, and thyme.
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18
Cook, stirring occasionally, till mushrooms are tender, about 10 min.
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19
Heat the remaining 2 Tbsp.
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20
extra virgin olive oil in an ovenproof skillet set over medium-high heat for 1 minute.
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21
Add in the lamb; cook 2 min on one side, then turn.
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22
Place the skillet in the oven for 3 to 4 min for rare meat, a little longer for more well-done.
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23
Let the lamb rest 1 minute, then cut it into 1/2-inch-thick slices.
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24
Place a dollop of leek puree on each plate, top with a portion of mushrooms, then place the lamb on top.
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25
Sprinkle with a little coarse salt, and serve.