Brown ground beef, drain. Add onions and cook until onions are translucent

Combine meat, onions, flour, salt, pepper and paprika. Stir for 3-5 min, then add broth.

Simmer broth for 5-10 min or until liquid is reduced by half

Add Worcestershire sauce and red wine vinegar, stir.

Add cream of mushroom soup and mushrooms (if desired) and cook 5 minutes.

Add sour cream and heat thoroughly. Serve over egg noodles.