Peel and finely dice the onions and garlic. Quarter the peppers, clean, wash, peel and cut into large pieces. Heat oil in a pot. Sauté onions, garlic, up to 1/2 tsp. and paprika in the pot for about 5 minutes. Season with salt and pepper
Add stock and cream, simmer for 10-15 minutes in an open pot. In the meantime, bring milk and 1/2 tsp. garlic to the boil in a saucepan, season with salt and pepper. Wash the basil, carefully dab dry, pluck leaves from the stalks. Add basil leaves and puree with a blender, pour through a sieve. Puree the soup with a hand blender and season with salt and pepper.
Fill 4 glasses (each with a capacity of approx. 300 ml) each with approx. 3/4 of the soup. Foam milk with a hand blender, add foam to the soup with a tablespoon. Froth the milk again and again until each glass is covered with foam