By Cathy Branciaroli, Food Correspondent , The Times Tomato jam is a wonderful way of making summer tomatoes last longer. If you’re like me you’ve been pampering garden tomatoes all summer, and guess what, now they’re all coming to harvest. What to do? I love to eat them like apples with a little salt sprinkled on. But really – what can one do to preserve this bountiful harvest? Here’s...