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1
Place a small, heavy skillet over medium heat.
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2
Add the peppercorns and cook, shaking the pan, until they are fragrant and lightly toasted, about 3 minutes.
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3
Transfer them to a mortar and crush coarsely, or place on a cutting board and crush with the side of a knife.
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4
Set aside.
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5
Place the shallot and wine in a small saucepan and simmer until the mixture is almost dry, 5 to 6 minutes.
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6
Reduce the heat as low as possible and whisk in the diced butter a chunk at a time.
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7
Season with sea salt.
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8
Set aside.
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9
Place a small-enough cutting board in a sheet pan.
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10
(This will catch the lobster juices.)
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11
Lay a lobster on the cutting board.
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12
Place the tip of a large, heavy knife at the indentation where the carapace meets the lobster head, insuring that the cutting blade is facing toward the lobster's eyes.
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13
Swiftly and forcefully, plunge the knife through the lobster until the knife point hits the cutting board.
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14
Immediately force the blade down, splitting the lobster's head.
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15
(Although it's dead, it may still move.)
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16
Continue splitting the lobster so that the head and tail are split.
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17
Repeat with the remaining lobster.
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18
Remove and discard the intestine from the tail as well as the spongy green parts from the body.
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19
Twist off the claws, and using the flat of the knife, crack each claw and remove some of the shell to expose as much of the meat as possible.
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20
Preheat the broiler.
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21
In a roasting pan just large enough to hold the lobster pieces in a single layer, scatter all but 1 1/2 teaspoons of the cracked peppercorns.
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22
Lay the lobster pieces, flesh side up, in the pan and baste the shells and meat generously with some of the butter sauce and sprinkle them with the reserved peppercorns.
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23
Season the meat lightly with sea salt.
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24
Broil the lobsters about 8 inches from the heat for 5 minutes.
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25
Remove from the oven, brush again with butter sauce and broil until the meat is just opaque, 4 to 5 more minutes.
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26
Transfer the pieces to plates, surround with some of the peppercorns from the pan, garnish with chervil and serve.