Remove the ends from the beans and cut into bite-sized pieces. Peel the potatoes and dice them evenly. Braise the diced shallots and the potato cubes in the heated oil. Add the savory and pour the vegetable stock over it. Cook for about 10 minutes, then add the beans, sea salt and pepper, possibly a little more vegetable stock. After a further 20 minutes, stir the sour cream or sour cream well and also add.
Portion the stew and sprinkle each with crumbled feta cheese and chopped parsley.