Clean and wash the spring onions. Cut into fine rings. Put 1 tablespoon of spring onion green aside. Peel ginger and chop finely. Drain the corn in a sieve.
Heat the oil in a large pot. Sauté spring onions and ginger for about 3 minutes while turning. Add corn, up to approx. 1 tbsp. and fry briefly. Deglaze with coconut milk and 600 ml water.
Bring to the boil, stir in the bouillon and simmer for about 8 minutes.
Remove the soup from the stove and puree it finely with a hand blender. Season to taste with salt and pepper. Sprinkle soup with the rest of the spring onion rings and corn.