layer onions, beef, onions, drizzle with oil, refrigerate overnight.
heat oil to bubbly, keep hot over sterno, dip beef in oil until cooked to your liking.
for horseradish sauce, mix all ingredients, refrigerate.
for garlic butter, mix all ingredients, refrigerate.
for bernaise sauce: combine vinegar, water and pepper in double boiler.
add egg yolks, stir constantly.
slowly add butter, stirring as it thickens.
add lemon juice, tarragon, salt& pepper- if sauce is too thick add a drop of water.
