Ingredients:

  • ounces (115 grams) thick-cut smoked bacon or pancetta, diced small
  • tablespoons (45 grams) unsalted butter, divided
  • large leeks, white and light green parts only, thoroughly washed and thinly sliced
  • medium celery stalks, finely diced
  • cloves garlic, minced
  • tablespoons (25 grams) all-purpose flour
  • /2 cup (120 ml) dry white wine (e.g., Sauvignon Blanc)
  • cups (720 ml) clam juice or fish stock, low sodium preferred
  • cup (240 ml) heavy cream (35% fat)
  • pound (450 grams) fresh oysters, shucked (liquor reserved)
  • sprigs fresh thyme
  • /4 cup (60 ml) fresh parsley, chopped, for garnish
  • Kosher salt and freshly ground black pepper, to taste

Instructions:

  1. Render the bacon: In a large, heavy-bottomed Dutch oven over medium heat, cook the diced bacon until crisp. Remove the bacon with a slotted spoon, setting it aside on paper towels; reserve the rendered fat in the pot.
  2. Sweat the aromatics: Add 2 tablespoons of butter to the reserved fat. Add the sliced leeks and diced celery. Sauté slowly, stirring occasionally, for 8–10 minutes until completely softened and translucent (sweated), not browned. Add the minced garlic and cook for 1 minute more until fragrant.
  3. Build the base (Roux): Sprinkle the flour over the vegetables and stir continuously for 2 minutes to cook out the raw flour taste.
  4. Deglaze: Slowly whisk in the white wine until fully incorporated, scraping up any fond from the bottom of the pot. Allow to bubble and reduce slightly (about 2 minutes).
  5. Simmer the Stock: Gradually whisk in the clam juice/fish stock and add the thyme sprigs. Bring the mixture to a gentle simmer, stirring occasionally. Reduce heat to low, cover partially, and let it steep for 15 minutes.
  6. Blend (Optional for Smoothness): Remove thyme sprigs. If a completely smooth soup is desired, carefully transfer half the soup mixture to a blender (or use an immersion blender directly in the pot) and process until smooth. Return the blended portion to the pot.
  7. Finish the Cream Base: Stir in the heavy cream and the reserved oyster liquor. Heat gently until steaming hot, but do not boil after adding the cream. Taste and season judiciously with salt and pepper.
  8. Poach the Oysters: Increase heat slightly so the soup is just barely trembling (about 170°F / 77°C). Gently add the shucked oysters. Poach for only 2–3 minutes, just until the edges curl slightly and they turn opaque.
  9. Serve: Ladle the soup into warmed bowls. Garnish immediately with the reserved crispy bacon bits and freshly chopped parsley.