Plum tomatoes, also called Roma or Italian tomatoes, are the best year-round super market tomato. Tomato soup is a classic winter meal, so you don't have to wait until the summer for good tomatoes. Plum tomatoes are a deep red color, and they have a distinctive oval shape. With firmer flesh and fewer seeds than round tomatoes, they are considered the best cooking tomatoes due to their concentrated flavor and high acidity.
Try this Kitchen Shortcut with Fresh Tomato Soup.