Preheat oven to 300 degrees F.
Whisk together spices in a large bowl: paprika, onion powder, garlic powder, parsley flakes, salt, pepper, and celery seed, then add in the beef chunks and toss together to fully coat the roast in the spices. Set aside.
Heat oil in a dutch oven on medium-high heat for 5 minutes.
Add in roast and sear on all sides; about 2-3 minutes per side or until a brown crust has formed.
Remove the roast and set aside, then sauté the onions in the dutch oven until softened, about 3 minutes.
Deglaze the dutch oven with red wine, scraping up any brown bits from the bottom, then add the beef back in.
Pour in broth and worcestershire, cover, then cook in preheated oven for 3-4 hours or until the roast is fall apart fork tender.
Stir in red wine vinegar, then taste and re-season, if necessary.
Serve with mashed potatoes and other sides of choice, and enjoy!
Take 5 seconds to . We greatly appreciate it!