Peel the onion and cut into small cubes, then place the drained beans with the onion cubes in a bowl. Season with salt, pepper and savory. Add the vinegar and oil and stir everything. Please handle the vinegar carefully so that the bean salad does not get too sour. I use safflower oil as an oil, but you can also use another oil. I leave the prepared bean salad in the fridge for 1.5-2 hours.