Roasted Tomato with flour

2 cans (28 ounces each) whole tomatoes (not packed in puree), drained, 3 cups juice reserved, seeded 6 large cloves of garlic , peeled (left whole)[...]

2 tablespoons olive oil 2 medium leeks , white part, finely sliced 2 medium shallots , peeled and chopped 1 medium carrot , peeled and chopped small 2 celery[...]

1 1/2 lbs grape tomatoes , jumbo or any other kind 1/2 cup fresh basil leaves , cleaned 1 small white onion, chopped finely 2 tablespoons all-purpose flour 3[...]