Real Beef Tacos

Ingredients

• 3 to 4 lb. beef chuck, shoulder or pot roast
• salt and pepper
• 1/4 to 1/3 c. oil
• 1 c. water or low-fat beef broth
• 1 large onion, chopped
• 3 garlic cloves
• 1 (16 oz.) can chopped tomatoes
• 1 small can tomato sauce
• 1 can chopped green chiles
• 1 1/2 tsp. chili powder
• 1 tsp. comino