Ingredients

  • 1 cup mayonnaise
  • 1/4 cup prepared horseradish (or more)
  • 2 teaspoons white wine vinegar
  • kosher salt
  • fresh ground black pepper
  • 1 tablespoon fresh tarragon, chopped
  • 1/2 bunch fresh dill
  • 1 shallot, halved
  • 10 black peppercorns
  • 1 bay leaf
  • 1 lemon, halved
  • 1 lb small shrimp, thawed if frozen and cut into 1/2-inch pieces
  • 1/2 seedless cucumber, cutin into 1/4-inch pieces

Method

  • Make the horseradish mayonnaise by whisking together the mayonnaise, horseradish, vinegar, some salt, pepper, and more horseradish, if desired; fold in tarragon.
  • Line a baking sheet with paper towels to drain the shrimp once it is poached.
  • In a large, wide pot, combine dill, shallot, peppercorns, bay leaf, 3 tablespoons salt, squeeze the juice from both lemon halves, then drop in the lemon halves; add 3 quarts of water and bring to a boil.
  • Reduce heat to medium and let poaching liquid simmer for 10 minutes.
  • Working in batches, place the shrimp in a sieve, lower into the poaching liquid, shaking now and then, until shrimp begins to curl and turn opaque, 15-20 seconds; transfer to paper towels to cool.
  • Combine cucumber, cooled shrimp, and 1/4 cup of the horseradish mayonnaise and fold to coat; season with salt, pepper, and more horseradish, if desired.