Steak and Chive Yoghurt Salad

Ingredients

• 1 350g sirloin steak
• Olive oil
• Salt
• freshly ground black pepper
• 80g baby spinach leaves
• 30g wild rocket leaves
• 1 large tomato, halved and sliced
• 1/2 red onion, sliced
• 1 avocado, sliced
• Lemon wedges, for serving
• 1 cup yoghurt
• 1 garlic clove, crushed
• 2 Tbsp chives, chopped
• 1 tsp lemon juice