Cook Egg Noodles according to directions.
Simmer seaweed in beef broth for 30 mins.
Cook ground beef and mushrooms in garlic and onion oil.
Remove seaweed, then add beef broth to cooked beef/mushroom mixture, and add salt.
Bring to boil, then cover and reduce heat to simmer for 15 minutes.
Cook egg noodles
Prepare cornstarch flurry by mixing cornstarch and cold water.
Add cornstarch slurry to beef mixture to thicken.
Add sour cream & parsley and heat until hot. Do not boil. serve over noodles