Finely chop the beef with a sharp knife and mince or pass through a mincer. Place the egg yolks in a bowl and mix with the Dijon mustard. Mix in the oil with a whisk until it binds. Add the ketchup, salt, pepper, chili, paprika powder, cognac and finely chopped pickled cucumbers, capers, parsley and shallots. Mix the chopped meat well with the above ingredients and season if necessary.
Serve the tartare with toasted white bread or farmhouse bread.