The diminutive Sardinian pasta known as fregola soaks up the delicious broth that results from steaming together fresh clams, andouille sausage, and corn in this company-worthy one-pot dinner.
In a large bowl, stir 2 tablespoons sea salt into 8 cups cool water. Add clams; let stand 30 minutes, then drain and rinse. Meanwhile, cook fregola in a large pot of salted boiling water until al dente, 8 to 10 minutes. Drain; drizzle with oil. Wipe out pot.
In same pot, heat 1 tablespoon each oil and butter over medium-high. Add garlic and chile; cook, stirring, until fragrant, 1 to 2 minutes. Stir in wine, 1/2 cup water, clams, sausage, and corn. Bring to a boil, then reduce heat to medium, cover, and cook, stirring occasionally, 12 to 16 minutes, transferring clams as they open to a covered bowl. Transfer corn and sausage to bowl once all clams are open. Stir remaining 1 tablespoon butter into broth; keep warm.
Spoon fregola onto a platter and drizzle with half of warm broth; scatter some cilantro over. Top with clam mixture, then pour remaining broth over. Top with remaining cilantro, and serve with lime wedges and hot sauce.