This simple recipe for Clam and Seaweed Soup requires just five ingredients and is ready in just 35 minutes, making it a great meal option when you are in a bit of a hurry. A little planning ahead is required as you need to allow the clams to soak in saltwater for at least 24 hours in the refrigerator. This recipe walks you through the process of creating your own seaweed and clam broths that serve as the basis for this clam soup. Serve with crusty bread to dip.