The Litchi tomato comes to us from South America. Because the plant itself is covered with thorns, it is sometimes used as a hedge plant to discourage animals from wandering into vegetable gardens — not a bad idea. The fruits ripen dark red and are round and somewhat bullet-shaped, tapering to a blunt point. The interior flesh is yellow and full of tiny flat seeds that are arranged much the same way as seeds in a cherry tomato. Thus, when eaten out of hand, the raw fruit has the mouth feeling of raspberries. The actual flavor is tart and refreshing, quite similar to a sour cherry, for which it can be used as a relatively good substitute in pies.