Slow Cooked Shredded Beef

Name: Slow Cooked Shredded Beef
Prep time: 15 min
Cook time: 6 h
Total time: 6 h 15 min
Cuisine: European
Ingredients: 1kg (2.2lb) beef; 1 tbsp oil; 1 red pepper; 1 green chilli; 1 large onion; 400g (14oz) tin chopped tomatoes; 1 tbsp ketchup; 1 tbsp tomato puree; ½ tbsp Worcestershire sauce; 1½ tsp oregano; 1 tsp cumin; 1 tsp sweet chilli powder; 6 cloves garlic (crushed); water; salt and pepper (to taste); 1 stock cube