Prepare all your veg before cooking your soup: wash and trim the beans, then cut them into little cubes (+/- 1 cm). Peel the potato and cut into middle sized cubes as well. Finely chop the onion.
Now add the butter to a large frying pan, melt it, then add the onions and bacon lardons. Fry for a few minutes and add the flour. Fry for another minute and add the vegetable stock.
Bring everything to a boil, throw in the beans and potatoes, then add the bay leave and summer savoury and let simmer for about 15 minutes.
Season with salt and pepper.
Once the vegetables are cooked through, divide the soup between 4 plates. For those who like it add a dash of cream to the soup.
Enjoy!!!