Boil potatoes until tender but firm. Process salt pork in a food processor or blender to the consistency of soft butter.

In 4-quart saucepan melt salt pork and butter. Add onions and cook over medium heat until transparent. Add flour and white pepper and cook this roux for 2-3 minutes. Do not brown.

While roux is cooking, heat clam juice and cream, being careful not to boil. Slowly add this hot liquid to the roux, cooking until thickened. Do not allow to boil. Add potatoes and canned clams, including the broth clams are packed in, and simmer for 10 minutes.