Machaca

Yield:	6 Servings
Categories:	Mexican, Meats

2	md	Onions, chopped
1/2	c	Canned diced mild green chilies
1	ts	Crushed red chile flakes
1/2	ts	Tabasco sauce
1/2	ts	Freshly ground black pepper
1/4	ts	Cumin
1	c	Canned diced tomatoes in puree or liquid
2	lb	Beef top round, trimmed of all visible fat and cut into 4 or 5 large pieces