How to make a delicious radish and avocado soup
For the soup
Combine the watercress, stock, avocado, spring onion, yogurt, lemon juice, and cumin in a food processor or blender.
Blend on high until smooth and velvety.
Season to taste with salt and pepper.
Pass through a fine sieve into a bowl.
Cover and chill until cold, about 2 hours.
Divide soup between bowls. Top with radish, beansprouts, and some more freshly ground black pepper before serving.