1.2 kg | 2½ lbs Roma tomatoes, halved lengthwise
600 g | 1¼ lbs Grape (or Cherry) tomatoes, halved lengthwise
8 whole cloves garlic, peeled and smashed with the back of a knife
3 tablespoons olive oil
Salt and freshly ground black pepper
1 large onion, diced
1 red bell pepper (capsicum), deseeded and diced
2 potatoes (200 g | 7 oz), diced
3 tablespoons tomato paste
4 cups vegetable broth
2 cups lightly packed fresh basil leaves, roughly torn