Dooger's Clam Chowder

1 pound boiling potatoes, peeled and chopped
1 cup half and half
1/2 cup whipping cream
4  6oz cans minced clams (drain 3 of the cans, but reserve
     the juice from the fourth can)
1/4 teaspoon seasoning salt
1/4 teaspoon ground thyme
freshly ground WHITE pepper

Cook potatoes in large pot of boiling salted water until done.
Drain.  Transfer potatoes to a bowl and slightly mash.
Scald half and half and cream but do not boil.  Add potatoes,
clams, and reserved clam juice.  Add seasoning.  Bring to a
boil and serve.