Ingredients

standing rib roast (they call it "Golden Lion Style" around here)
* allow 3/4 lb per person
1 packet au jus mix
1/4 cup mayonnaise
1/4 cup sour cream
1 Tbs cream style horseradish

Directions

Put the roast upright, with the ribs down in a roasting pan.

Put a foil tent over the top to keep the outside from becoming too brown, and bake in the oven at 300F for about 25-30 minutes per pound. If you use a meat thermometer, let the center reach 145F.

When done, put the roast on a cutting board, remove the tie strings and carve the ribs away from the meat. Slice crosswise into 1/2" slabs and serve with au jus and horseradish sauce.

Au jus:
Add 1 Tbs au jus mix and one cup of water to 1/4 cup drippings from the roasting pain. Bring to a boil then remove from heat.

Horseradish sauce:
Mix the mayonnaise, sour cream and horseradish in a small serving bowl.