Mix well chopped egg, capers,thyme, salt and pepper.
Snip off the woody stalk ends of asparagus and boil them in salted water until firm to the bite. Rinse with cold water. Boil early potatoes with shell on.
Spice steaks with salt and pepper and fry meat to taste every side about 6 minutes. Remove steaks, douse with beef stock, boil up and refine with butter flakes just before serving. Halve potatoes and arrange with sour cream. Sprinkle asparagus with cheese.
Arrange steaks on plates, sprinkle with gravy and serve with potatoes and asparagus.