Tandoori-Style Chicken Breasts

Ingredients

• 4 chicken breasts, about 150 g each
• sunflower oil for brushing
• lemon or lime wedges to serve
• sprigs fresh coriander to garnish
• 1 garlic clove, crushed
• 1 tablespoon finely chopped fresh ginger
• 1 1⁄2 teaspoons tomato paste
• 1 1⁄2 teaspoons garam masala
• 1 1⁄2 teaspoons ground coriander
• 1 1⁄2 teaspoons ground cumin
• 1⁄4 teaspoon turmeric
• 1⁄8 teaspoon cayenne pepper
• 100 g plain low-fat yogourt
• 350 g plain low-fat yogourt
• 1 cucumber, cut into quarters lengthwise and seeded
• 1 tomato, very finely chopped
• 1⁄2 teaspoon ground coriander
• 1⁄2 teaspoon ground cumin