Clean the radishes and put the green aside. Wash the radishes and chop them coarsely, except for 4-5 pieces. Sort the radish green, wash, shake dry and chop coarsely. Clean and wash spring onions and cut into rings.
Peel, wash and chop the potatoes.
Boil the potatoes in 800 ml water, stir in the stock. Boil potatoes for about 15 minutes. After about 10 minutes add the chopped radishes, the chopped radish green and spring onions, simmer. Cut the remaining radishes into thin slices.
Wash mint, shake dry, pluck leaves from the stalks and cut into fine strips.
Roughly puree the soup with a hand blender. Stir in cream and heat up. Season to taste with salt and pepper. Serve the soup and sprinkle with radish slices and mint. Drizzle with olive oil.