This recipe works with various fish: Try delicate flatfish like sole, flounder, and dab; flaky whitefish like cod, sablefish, and Pacific rockfish; or even fish high in omega-3 fats like salmon. Feel free to play with the aromatics in the steaming liquid, but avoid using sulfurous vegetables like cabbage or broccoli; their strong flavors can overpower the broth. And don’t use carrots or potatoes—they don’t add any aromatic flavor and are best saved for another purpose.
How to Make It
Sprinkle fillets with 1/2 teaspoon salt. Combine wine, orange zest and juice, and garlic in a 10-inch pot. Place celery in a single layer in the pot, making a “raft” for the fish. Bring to a boil over medium-high. Place fillets on celery raft; reduce heat to medium to maintain a simmer. Cover; steam fillets until cooked through, about 7 minutes. Transfer fish to a plate.
Combine steaming liquid, 2 cooked garlic cloves (discard remaining garlic), watercress, cooked celery, and olive oil in a blender, and puree until smooth. Add sugar, coriander, and remaining 1/2 teaspoon salt. Divide sauce among 4 shallow bowls. Top with fish, orange sections, and watercress.