This was a huge hit and I really wasn't paying attention when I was cooking it.... I *think* this is pretty close.
1 lb beef stew meat (I get ours from Marketday.)
1 can diced or crushed tomatoes
1 onion - diced
4-6 diced pickled jalapenos
1 cup chicken broth
½ -1 t sugar
saute onions and peppers in olive oil. Season meat and brown in two batches. Add tomatoes & chicken broth. Simmer for 2-3 hours until the beef shreds. Use as taco, enchilada, mexican lasagna filling, etc.
And - I'm working on more pictures!