This chili is made with steakhouse flavors: sirloin, bacon, steak sauce, and sour cream. Ask your butcher for coarse ground sirloin or you could cut it into very small dice by hand.
In a large pot or Dutch oven, heat the oil over medium high heat; add the bacon and cook until the fat renders, about 2 minutes.
Add the beef and brown, stirring occasionally, about 8 to 10 minutes.
Add the onions, cook until softened, about 5 minutes; stir in garlic, a little salt, lots of pepper, tomato sauce, Worcestershire sauce, brown sugar, hot sauce, and beef stock.
Heat to boiling, then lower heat and cook until thickened, 6 to 7 minutes.
Divide chili into individual serving bowls, top with a dollop of sour cream, and garnish with parsley.