In a large skillet, cook bacon over medium high heat until crisp. Put bacon in slow cooker.
Salt and pepper the beef. Add beef to skillet and sear on each side for 2-3 minutes. Transfer beef to slow cooker.
Add the red wine to the skillet scraping any brown bits on the side and bottom. Allow to simmer and reduce then slowly add chicken broth, tomato sauce and soy sauce. Slowly whisk in the flour. Add the sauce to the slow cooker.
Wash and dry all produce. Finely chop the garlic cloves and slice the carrots and mushrooms. Add, along with the potatoes, to the slow cooker.
Give everything a good stir and cook on low until the beef is tender for 8-10 hours. Serve and garnish with parsley.