Beef, bean and avocado tacos

Ingredients

• 1 tablespoon olive oil
• 1 large onion, finely chopped
• 400 grams beef mince
• 2 tablespoons tomato paste
• 2 teaspoons ground coriander
• 2 teaspoons ground cumin
• 1 x 440 g can red kidney beans, rinsed, drained
• 1 cup (250ml) salt-reduced chicken, beef or vegetable stock
• 1 small avocado, diced
• 2 tomatoes, diced
• 1 tablespoon lime or lemon juice
• 6 drops tabasco sauce
• 8 taco shells or flour tortillas
• shredded lettuce, lime wedges, to serve
• 1/2 cup roughly chopped coriander (optional)