Boil the green beans in salted water for about 10 minutes.
In the meantime, cut the onions into small pieces. Peel the potatoes and cut into thick slices and rinse the Borlotti beans well.
When the beans are cooked, drain, rinse and drain.
Sweat the onions in a little butter, add tomato paste and fry a little. Add both types of beans and the potatoes and fry briefly. Deglaze with white wine and then add the vegetable stock. Let everything boil open for 5 - 8 minutes. Season with salt and pepper, and if you like it hot, add a little chili.