Saute onion, green peppers, and jalapeno pepper in oil until softened, about five minutes
stir in shredded meat, warm through
stir in diced tomatoes
simmer until everything changed texture and blends, 30-40 minutes. If it starts to dry, add some liquid that the meat was cooked in if available, or water
Add salt and pepper as needed.
Recipe by Average Ninja at https://average.ninja/blog/2015/08/04/mexican-carne/