Vegetable Soup without garlic chuck

1 tablespoon extra virgin olive oil 1 leek , halved, washed and thinly sliced 1 stalk celery , thinly sliced 1 liter low-fat chicken broth 1 (420 g) can[...]

3 tablespoons butter 1 large onion , chopped 1 large leek , chopped 2 medium carrots , chopped 1 medium celery rib , chopped 1 bay leaf 1/4 teaspoon black[...]

3 tablespoons butter 1 large onion , chopped 1 large leek , chopped 2 medium carrots , chopped 1 medium celery rib , chopped 1 bay leaf 1/4 teaspoon black[...]

1 leek , white part chopped and some of the greens sliced 15 baby carrots, chopped 1/4 large white onion 1 garlic clove , pressed 3 small red potatoes, cubed,[...]