Cover the potatoes and boil them in water for about 20 minutes. Remove the beans from the pods and blanch in boiling salted water for 2-3 minutes. Drain, rinse with cold water and press the beans out of their skin.
Cover and cook in boiling salted water for 8-10 minutes. Drain potatoes, rinse with cold water and peel.
Clean, wash and cut the peppers into rings. Peel and finely chop the onion. Wash the sage, dab dry and chop coarsely. Cut potatoes into slices.
Peel the skin from the chorizo, cut the sausage into slices. Heat the oil in a pan and fry the chorizo in it all around for about 5 minutes. Add the beans, paprika and sage and mix well.
Deglaze with vinegar and bring to the boil. Carefully fold in potato slices. Season to taste with salt and pepper. Serve bean salad lukewarm or cooled down.