Lentil and bacon soup

Name: Lentil and bacon soup
Prep time: 10 min
Cook time: 55 min
Total time: 1 h 5 min
Cuisine: European, British
Ingredients: 300 g dried puy lentils (or green lentils (read notes above)); 1.5 litres vegetable stock; 2 onions (finely chopped); 2 sticks celery (finely chopped); 1 clove garlic (finely chopped); 4 carrots (grated or finely chopped); 1 tin chopped tomatoes; 3 tbsp tomato puree; 4 smoked bacon medallions (finely chopped); salt and pepper; Frylight