Chicken & black bean chowder

Name: Chicken & black bean chowder
Cook time: 1 h
Total time: 1 h
Cuisine: American, Mexican, Latin American
Ingredients: ½ a bunch of fresh coriander (15g); olive oil; 2 onions; 2 cloves of garlic; 2 sticks of celery; 250g free-range cooked chicken; 1 teaspoon ground cumin; 1 pinch of cayenne pepper; 1 x 400g tin of black beans; 750ml organic chicken stock; 2 fresh corn on the cob; 1 fresh bay leaf; 75ml single cream; 2 corn tortillas; 1 lemon