Clean the leek, rinse, cut into rings and sauté in butter until translucent. Sprinkle with flour, sweat briefly and extinguish with clear soup. Add the hominy to the leek form and cook with the lid closed.
Remove the seeds from the chili pepper and cut into cubes. Cut tomatoes into six parts and remove seeds. Stir the whipped cream into the soup, season heartily with salt, pepper and sugar. Add chili peppers and tomatoes and infuse.
Before serving, chop the basil and sprinkle over the soup.