Heat the oil in a saucepan and sweat the onions and diced paprika in it. Rinse the soaked azuki beans under running water and add to the onions, deglaze with water. Simmer everything for about 45 minutes, after about 25 minutes add the potatoes and season. Finally add the pineapple cubes to the beans, bring to the boil briefly and season again to taste. Now the soup can be served.
Tips: The spiciness of a chilli pepper and the acidity of half a lemon go well with the sweet taste of the pineapple.