
This hearty seafood soup is a home-cook replication of Osteria Francescana's iconic Zuppa di Pesce that wants to become a Bagna Cauda, blending rich seafood with the intense flavors of Piedmont's famous warm dip.
Pat the fish, shrimp, and scallops dry. Season lightly with salt and pepper. Set aside.
In a large Dutch oven or heavy-bottomed pot, heat 1/4 cup olive oil over medium-low heat. Add the sliced garlic and anchovy fillets. Cook gently, stirring occasionally, for 8-10 minutes, until the garlic is very tender and fragrant (do not brown) and the anchovies have dissolved into the oil, forming a fragrant paste.
Stir in the red pepper flakes, if using, and cook for another minute.
Increase heat to medium-high. Pour in the white wine and bring to a simmer, scraping up any browned bits from the bottom of the pot. Cook until the wine has reduced by half, about 2-3 minutes.
Add the crushed tomatoes and seafood stock to the pot. Bring the soup to a gentle simmer, then reduce heat to medium-low and cook for 15 minutes, allowing the flavors to meld. Taste and adjust seasoning with salt and pepper if needed (anchovies add a lot of salt, so taste before adding more).
Add the cut white fish to the simmering soup. Cook for 3-4 minutes, or until the fish starts to become opaque. Then add the shrimp and scallops. Cook for another 2-3 minutes, or until the shrimp are pink and cooked through and the scallops are opaque.
Remove the pot from the heat. Stir in the fresh chopped parsley.
Ladle the soup into warm bowls. Drizzle each serving with a little extra virgin olive oil and serve immediately with crusty bread for dipping and lemon wedges on the side, if desired.