Ingredients

Preparation

Step 2

Stir in stock and bring to a boil. Reduce heat and simmer, uncovered, 30 minutes. Carefully pour through a fine sieve into a bowl, then discard solids.

Step 4

Heat a well-seasoned ridged grill pan over moderately high heat until hot. Brush bread with remaining 2 tablespoons oil, then grill on all sides until grill marks appear. Tear bread into rough 3-inch pieces and bake on a baking sheet in middle of oven until crisp outside but soft inside, about 10 minutes. Cool croûtes.

Step 5

Heat butter in a 4-quart heavy saucepan over moderate heat until foam subsides, then cook white part of leek, stirring, until beginning to soften, about 2 minutes. Add fish, hot broth, and salt and bring to a simmer (fish will be cooked through). Remove from heat and stir in 1/2 cup rouille.

Step 6

Put croûtes in soup plates and ladle soup over. Sprinkle with oregano and parsley and serve remaining rouille on the side.