Peel the potatoes, cut them into cubes, and cook them in a large pot with a pinch of salt until tender, about 15-20 minutes. Then drain.
Fry the bacon bits in a dry skillet until nice and crispy. Drain them on a piece of paper towel.
In the same pan, melt the butter and sautée the chopped onion until translucent.
Add the pointed bell pepper and cook for a few minutes. Then add the finely sliced green beans and cook for another 5-7 minutes until al dente. Season with salt and pepper.
Mash the potatoes with a potato masher and stir in the crème fraîche until you have a creamy purée.
Then add the grated aged cheese, the sautéed vegetables and bacon bits, curry powder, and coarse-grained mustard. Mix everything together well. Taste and add extra salt and pepper as desired.
Serve this delicious stew with meatballs, a fresh salad or pickles. Enjoy!