Can I use frozen shrimp and langostines?
Yes, thaw them completely and pat dry before adding to the sauce to avoid excess water diluting the sauce.
What if I don't have langostines?
Substitute with additional shrimp, scallops, or white fish; the cooking time remains 2 minutes.
Why do you add the seafood so late?
Shrimp, langostines, and tuna cook very quickly and will become rubbery or dry if simmered in the sauce too long; 2 minutes is enough to warm them through.
Can I make this ahead?
Prepare the tomato-clam sauce up to 24 hours ahead and refrigerate, then reheat gently before adding the seafood and pasta.
Do I need to rinse canned tuna?
No; this recipe uses tuna packed in olive oil, and adding the oil enriches the sauce, so include it.