In this eHow video clip, you will learn how to make a seafood sauce. First, chop 50g of onion and melt a few tablespoons of butter in a frying pan and saute the onion with 200g of cockles, add 300g of mussels and 200g of prawns and 200cc of white wine and reduce heat. Then add 250cc of cream and reduce heat until it takes shape. Next, season with salt and pepper to taste. Add cooked pasta or noodles to the frying pan and mix well. Serve and enjoy. And that is how you make a seafood sauce.