Tuscan bean stew

Name: Tuscan bean stew
Cook time: 30 min
Total time: 30 min
Cuisine: European, Italian, Mediterranean
Ingredients: olive oil; 1 clove garlic crushed; 2 carrots diced small; 2 sticks celery diced small; 1 large leek chopped; 900ml vegetable stock; 1 tbsp tomato purée; 3 tbsp pearl barley; 1 x 400g tin borlotti beans; about 150g leafy greens any woody stalks removed and shredded; crusty bread to serve