BBC Food - Recipes - Wild mushroom and asparagus soup with balsamic caramelised tomatoes

Ingredients

• 1 tbsp olive oil
• ½ onion , finely chopped
• 1 garlic clove, finely chopped
• 100ml/3½fl oz white wine
• 8 asparagus spears, chopped
• 55g/2oz chanterelle mushrooms
• 400ml/14fl oz chicken or vegetable stock
• 100ml/3½fl oz cream
• salt and freshly ground black pepper
• 1 tomato , halved
• 2 tbsp balsamic vinegar
• 1 tbsp Greek-style yoghurt
• 1 tbsp chopped fresh chives