Clean and wash the corncobs. Cut the corn off the cob (let the canned corn drip off). Peel and chop onions and garlic
Heat the butter in a pot. Sauté onions in it until transparent. Fry garlic and corn briefly. Dust with flour and cumin if necessary. Add 1/2 l water and milk, bring to the boil. Simmer covered at low heat for about 30 minutes. Stir in broth
Clean, wash and finely chop the spring onions. Leave the bacon out without fat until crispy. Take out, drain. Steam spring onions in hot bacon fat for 2-3 minutes
Possibly lift some corn grains out of the stock. Finely mash the rest. Pass through a fine sieve. Add the corn grains and spring onions and heat them up. Season soup with salt, pepper, sugar and possibly some cumin. Lightly whip the cream. Arrange the soup with 1 blob of cream and 1 slice of crispy bacon in 4 small bowls