Slow Cooker Pineapple Beef Stew

Ingredients

• 400 g diced beef, (all visible fat removed)
• 1 medium onion, (peeled and sliced)
• 2 garlic cloves, (peeled and crushed)
• 1 medium red pepper, (deseeded and sliced)
• 2 cm piece root ginger, (peeled and finely grated)
• 2 carrots, (peeled and sliced)
• 2 sticks celery, (sliced)
• 200 g potato, (peeled and cut into chunks)
• 180 g fresh pineapple, (peeled, cored and cut into small chunks)
• 400 g tin chopped tomatoes
• 200 ml beef stock ((½ beef stock cube dissolved in 200ml boiling water))
• 1 tbsp tomato puree
• 1 tbsp Henderson's relish or Worcestershire sauce
• 1 tbsp light soy sauce
• 2 tsp white granulated sweetener
• ½ tsp hot pepper sauce
• 2 tsp cornflour
• salt and freshly ground black pepper, (to taste)
• low-calorie cooking spray