Mushroom Bisque | America's Test Kitchen

Ingredients

• 1 pound white mushrooms, trimmed
• 8 ounces cremini mushrooms, trimmed
• 8 ounces shiitake mushrooms, stemmed
• Kosher salt and pepper
• 2 tablespoons vegetable oil
• 1 small onion, chopped fine
• 1 sprig fresh thyme, tied with kitchen twine
• 2 tablespoons dry sherry
• 4 cups water
• 3 1/2 cups chicken broth
• 2/3 cup heavy cream, plus extra for serving
• 2 large egg yolks
• 1 teaspoon lemon juice
• Chopped fresh chives