Heat a frying pan over medium-high heat. Add ground beef with a pinch of salt and pepper and the bay leaf. Break up the meat and cook until browned, about 5 to 6 minutes.
Add finely diced onion. Cook until softened and slightly caramelized, about 2 to 3 minutes.
Add diced tomato and chopped bell pepper. Stir and cook for 1 to 2 minutes until softened.
Add roasted cumin, dried oregano, onion powder, and white wine vinegar. Stir to combine.
Pour in tomato sauce. Stir everything together and let it cook down for 5 to 8 minutes on medium heat.
Add sliced olives and 1 tsp olive brine. Stir and cook for another 2 to 3 minutes.
Remove bay leaf. Taste and adjust salt and pepper.
Serve over fluffy white rice.