When veggies fight back! This plant may not look all that inviting since every inch of it is covered in spines, but the small red fruits of the litchi, or vila vila, tomato (Solanum sisymbriifolium) are completely edible and taste like a mix of a sour cherry and tomato. Native to South America, the fruits of this plant can be used for sauces, jams, pies & tarts, or eaten raw, while the leaves and roots have been used in traditional medicine. And because of the thorns, the plant itself makes an e