Cracked Crab with Horseradish Mayonnaise

Cracked Crab with Horseradish Mayonnaise

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Prep Time: 45 minutes
Cook Time: 12 minutes
Servings: 6 Serves 6.
Cracked crab makes a simple yet elegant main course for a celebratory meal. Blue or stone crabs can be used if Dungeness are unavailable; adjust the cooking time accordingly. If time is short, purchase freshly cooked crabs and ask your fishmonger to do the cleaning and cracking.


For the horseradish mayonnaise:

  • 1 egg yolk
  • 1 tsp. whole-grain mustard
  • 1/2 cup olive oil
  • 1/2 cup vegetable, corn or safflower oil
  • 2 garlic cloves, minced
  • 1 1/2 Tbs. fresh lemon juice, plus more as needed
  • 3 Tbs. prepared horseradish
  • Salt and freshly ground pepper, to taste
  • 2 Tbs. warm water

For the crabs:

  • 4 quarts water
  • 1 Tbs. salt
  • 3 live Dungeness crabs, each 2 to 2 1/2 lb.


To make the horseradish mayonnaise, in a small bowl, whisk together the egg yolk, mustard and 1 Tbs. of the olive oil until an emulsion forms. Combine the remaining olive oil and the vegetable oil in a cup with a spout. Drop by drop at first and whisking constantly, gradually add the oil mixture to the emulsion. Stir in the garlic, the 1 1/2 Tbs. lemon juice and the horseradish. Season with salt and pepper and add more lemon juice, if needed. Whisking constantly, add the warm water to thin the mayonnaise slightly. Cover and refrigerate until ready to serve.

To prepare the crabs, in a large pot, bring the water to a boil over high heat. Once it boils, add the salt and the crabs, immersing them completely. Boil until the crabs are cooked and the shells are red, about 12 minutes. Using tongs, transfer the crabs to a plate and let cool slightly.

Working with 1 crab at a time, place the crab on its back. Pull off the small triangular apron-shaped shell flap and discard. Turn the crab over and lift up and snap off the large top shell and discard. Remove the dark gray intestines and the feather-shaped white spongy gills from the body and discard. Rinse the body well. Using a large, heavy knife, cut the body in half from the head to the tail. Cut each half crosswise into thirds. Using a lobster cracker or a mallet, crack the claws and legs. If the crabs have cooled, warm them on a steamer rack over boiling water for 5 to 7 minutes.

To serve, arrange the crabs on a platter and serve with small forks or lobster picks for extracting the meat. Offer the horseradish mayonnaise on the side.
Serves 6.
Adapted from Williams-Sonoma Seasonal Celebration Series, Winter, by Joanne Weir (Time-Life Books, 1997).
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