No-sin asparagus soup Ingredients 1 tbsp low-fat spread drizzle of olive oil 2 bunches asparagus, chopped, tips set aside 1 medium onion, finely chopped 2 cloves garlic I large white potato, peeled and finely chopped 2 big handfuls fresh spinach 700ml vegetable stock salt and fresh black pepper 2 tbsp low fat plain Greek yoghurt