Preheat your oven to 275°F.
Position a rack in the lower third of the oven.
Heat olive oil in a large pot over medium-high heat.
Brown the beef cubes in batches.
Make sure they are browned on at least three sides.
Remove and set aside.
In the same pot, add chopped onions and minced garlic.
Cook until soft, then toss in carrots and celery.
Stir for about five minutes.
Pour in the red wine and bring to a boil.
Add flour, stirring until well combined.
Add beef broth, tomato paste, diced potatoes, canned tomatoes, and the browned beef.
Simmer for a few minutes.
Add the herb bouquet and bay leaves.
Cover the pot and transfer it to the oven.
Cook for about 2.5 to 3 hours until the beef is tender.