Kosher salt and freshly ground black pepper, to taste
1⁄4 cup flour
4 tbsp. unsalted butter
4 slices bacon, finely chopped
6 cloves garlic, finely chopped
3 medium yellow onions, thinly sliced lengthwise
2 cups Belgian-style ale, like Ommegang Abbey Ale
1 cup beef stock
2 tbsp. dark brown sugar
2 tbsp. apple cider vinegar
3 sprigs thyme
3 sprigs parsley
2 sprigs tarragon
1 bay leaf
Bread, for serving
Season beef with salt and pepper in a bowl; add flour and toss to coat. Heat 2 tbsp. butter in a 6-qt.
Dutch oven over medium-high heat. Working in batches, add beef; cook, turning, until browned, about 8 minutes.
Transfer to a plate; set aside. Add bacon; cook until its fat renders, about 8 minutes.
Add remaining butter, garlic, and onions; cook until caramelized, about 30 minutes.
Add half the beer; cook, scraping bottom of pot, until slightly reduced, about 4 minutes.
Return beef to pot with remaining beer, stock, sugar, vinegar, thyme, parsley, tarragon, bay leaf, and salt and pepper; boil. Reduce heat to medium-low; cook, covered, until beef is tender, about 1 ½ hours. Serve with bread.