An oven-simmered stew of clams, shrimp, and flaky white fish cooked makes a light, warm-weather dinner. The recipe calls for striped bass but cod, haddock, or snapper also work well.
Preheat a wood-burning or regular oven to 500 degrees. (If using a regular oven, set rack in lowest position and line with a pizza stone or metal baking sheet.)
In a large ovenproof braiser pan or straight-sided skillet, combine oil, butter, chopped fennel, shallots, garlic, and 1 teaspoon salt. Roast (on pizza stone, if using) until vegetables sizzle and turn golden in places, 8 to 10 minutes. Stir in paprika, cumin, and coriander; roast 1 minute more. Add vermouth; roast until reduced slightly, about 2 minutes. Add clam stock and clams; cover and roast until clams open, about 5 minutes.
Transfer clams to a bowl, discarding any unopened ones; cover to keep warm. Gently stir fish, shrimp, and beans into pan; continue roasting, stirring once, until fish is just cooked through and shrimp are opaque, about 5 minutes more. Remove from oven. Stir in lemon juice, return clams to pan, sprinkle with parsley and fennel fronds, and serve.