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1
Bring 6 cups water to a boil in a medium saucepan.
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2
Add bay leaf, thyme sprig, 1 tablespoon salt and 1 teaspoon pepper.
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3
Reduce heat to a simmer and add shrimp.
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4
Cook shrimp until shells turn red, only a minute or two.
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5
Transfer to a large bowl of cold water, let cool, then peel and set aside.
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6
Meanwhile, put beets in a saucepan, cover with water and bring to a boil.
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7
Reduce heat and cook at a brisk simmer until tender when tested with a skewer, about 20 minutes.
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8
Remove and let cool on a plate until just cool enough to touch.
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9
Slip off beet skins and discard.
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10
Cut beets into small wedges.
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11
Put in a bowl, season generously with salt and pepper, and add vinegar and oil.
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12
Toss and let marinate for 15 minutes.
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13
(You may prepare beets up to a day ahead.)
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14
Make the remoulade: Stir together creme fraiche, mustard, cayenne, horseradish and capers.
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15
Add 1/2 teaspoon salt, and stir in tarragon, parsley and dill.
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16
Refrigerate for an hour (or as long as overnight).
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17
Just before serving, stir in lemon juice and check seasoning.
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18
Assemble the salad just before serving: Make a bed of watercress on a large platter.
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19
Spoon beets and any juices evenly over watercress, then sprinkle celery slices over top.
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20
Arrange shrimp here and there and surround with hard-cooked egg halves.
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21
Give a last, very light sprinkle of salt and serve.
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22
Pass remoulade at the table.