Heat oil in a large dutch oven. Sear chuck roast pieces in batches.
Remove from heat, add in 2 tablespoons of butter, onion and leeks, salt to taste. Allow to soften.
Add in flour, beef bouillon, tomato paste, and beer. Stir to combine.
Stir in the dry ingredients listed as well as the carrots, your beef, bay leaves, Worcestershire sauce, and water.
Simmer for 2-3 hours. Once done, stir in balsamic vinegar and sugar.
Serve over mashed potatoes.