1 cup dry white wine
1/2 cup tarragon vinegar
1/2 cup shallots, chopped
2 Tbsp tarragon leaves, fresh
4 peppercorn, crushed
1/2 tsp thyme, fresh
4 to 5 cups basic hollandaise sauce
1/4 cup parsley, minced
2 Tbsp tarragon, fresh minced
1-1/2 tsp salt
1/2 tsp pepper
1/4 tsp prepared hot pepper sauce
3 cups sour cream