Clean the chilli pepper, halve it, scrape out the seeds. Chop the chilli pepper finely. Wash and halve 1 stick of lemon grass. Put tomatoes with chili and lemon grass in a pot. Season with salt, cumin and pepper. Bring everything to the boil and simmer for about 5 minutes
Peel the shrimps, except for the tail fin, and remove the intestines. Wash the shrimps and pat them dry. Remove 1-2 outer leaves from 4 sticks of lemon grass, depending on their thickness. Skewer 2 prawns onto each stick. Season with salt and pepper. Heat the oil in a pan. Fry the skewers for 2-3 minutes, turning them over
Remove lemongrass from the soup. Puree the soup, stir in about 2/3 of the coconut milk. Season the soup once more, divide into 4 bowls, spread the remaining coconut milk in streaks on the soup. Garnish with coriander, serve with skewers. Served with baguette bread