Salt and pepper the beef and then dredge in flour.
Melt butter in dutch oven over medium heat.
Saute onions and mushrooms in butter for about 7 minutes. Until onions are slightly translucent.
Add garlic and saute for 2-3 more minutes. Until the garlic becomes fragrant. Stirring frequently so that you do not burn the garlic.
Turn heat to medium-high and add beef. Sear until browned.
Deglaze the pan with the red wine.
Add beef paste, Worcestershire sauce, and water and stir.
Bring to boil then lower heat and simmer until beef is tender, about 3-4 hours.
Add sour cream and cook for an additional 20 minutes.