Try to have all the vegetables diced and sliced about the same size, which makes for a nice presentation. Of course, you can vary the vegetables according to what’s available. Feel free to add any other herbs when sauteing the vegetables. If you wish to use canned beans, use 2 cups (300g, drained) or for a real treat, use 2 cups of fresh cooked
shelling beans.
There are a variety of ways to make this soup. Some people will cook the beans in one large pot with 3 quarts (3l) of water, then just add the vegetables once the beans are tender. I like to cook or “sweat” vegetables, in a saute pan first, which encourages extra flavor out of them.