How To make Jansson's Frestelse (Jansson's Temptation) Mshol

7 md Boiling potatoes; peeled &
-cut into 2" X 1/4" strips 2 1/2 tb Butter
2 tb Vegetable oil
2 lg (to 3) yellow onions; thinly
-sliced (4 cups) 16 Flat anchovy fillets;drained
White pepper 2 tb Fine dry bread crumbs
2 tb Butter; cut into 1/4" bits
1 c Heavy cream
1/2 c Milk
Preheat oven to 400?F. Place the potato strips in cold water to keep them from discoloring. Heat 2 tablespoons of butter and 2 tablespoons of oil in a 10-12" skillet; when the foam subsides, add the onions and cook 10 minutes, stirring frequently, until they are soft but not brown.
With a pastry brush or paper towels, spread a 1 1/2 to 2-quart souffl