Beef Bourguignon

Name: Beef Bourguignon
Ingredients: 2 1/2 pounds sirloin or chuck roast cut into 1-inch cubes choose well marbled stewing beef; 8 oz smoked bacon chopped into pieces; Kosher salt; Black pepper; 1 lb carrots cut into 1 inch chunks; 2 cups pearl onions peeled; 2 cloves chopped garlic 2 tsp.; ½ cup Cognac; 3 cups good dry red wine I like a Burgundy or Pinot Noir; 2 cups beef broth; 1 tbsp tomato paste; 1 teaspoon dried thyme or 1 tbsp. fresh; 1 bay leaf; 4 tbsp butter divided room temperature; 3 Tbsp all purpose flour; 1 pound fresh mushrooms