Ingredients

  • 2 pounds shell-on shrimp
  • 4 tablespoons unsalted butter (1/2 stick)
  • 2 medium yellow onions, large dice
  • 2 medium carrots, peeled and large dice
  • 2 medium celery stalks, large dice
  • Kosher salt
  • Freshly ground black pepper
  • 2 tablespoons tomato paste
  • 5 fresh thyme sprigs
  • 2 medium bay leaves
  • 5 cups water
  • 3 tablespoons all-purpose flour
  • 1/2 cup Cognac
  • 3/4 cup heavy cream
  • 1/4 teaspoon cayenne pepper

Method

  • Peel shrimp, reserving shells.
  • Coarsely chop shrimp into bite-size pieces, place in a medium container, cover, and refrigerate until ready to use.
  • Place 1 tablespoon of the butter in a large saucepan over medium heat.
  • When the foaming subsides, add onions, carrots, celery, and reserved shrimp shells and season with salt and pepper.
  • Cook, stirring occasionally, until onions are just tender and shells are pink but not browned, about 5 minutes.
  • Increase heat to medium high and add tomato paste, thyme, and bay leaves; stir until vegetables are coated in tomato paste.
  • Add water, stir to combine, and bring to a boil.
  • Reduce heat to low and keep at a lively simmer until broth has a shrimp flavor, about 30 minutes.
  • Strain through a fine mesh strainer into a heatproof container; set aside and discard solids.
  • Wipe out any solids in the saucepan and return it to the stove over low heat.
  • Add remaining 3 tablespoons butter and let melt.
  • When butter foams, whisk in flour and cook, whisking frequently, until smooth and golden brown, about 4 minutes.
  • Slowly whisk in Cognac, then reserved hot stock, whisking until smooth, and bring to a boil.
  • Add cream, cayenne, and reserved shrimp and stir to combine.
  • Simmer until flavors have melded and shrimp is cooked through but not tough, about 8 to 10 minutes.
  • Season with salt and freshly ground black pepper, if desired.