Fragrant curried mince with tomato salad

Curried mince

• 100 g natural yoghurt
• 20 g oil
• 300 g brown onion, cut into quarters
• 2 garlic cloves
• 4 cm piece fresh ginger, peeled
• 1000 g beef mince
• 20 g tomato paste
• 1 tsp chilli powder
• 2 tsp garam masala
• 1 tsp ground cumin
• 2 tsp ground coriander
• ½ tsp ground turmeric
• 1 - 2 tsp salt, to taste
• 100 g water

Tomato salad

• 2 tomatoes, cut into pieces (1 cm)
• 1 continental cucumber, deseeded and cut into pieces (1 cm)
• ½ tsp dried mint
• ½ tsp salt
• 2 pinches ground black pepper
• fresh green chillies, trimmed and cut into thin slices (optional)
• roti, warmed, to serve (see Tip)