These are a luscious, widely adapted trio of treasured heirlooms. Medium-size, richly flavored Black Krim is from the Russian Black Sea area. It is the most reliable and delicious of the "black" tomatoes. Sweet Persimmon's big, meaty, globe-shaped fruits ripen up to a beautiful glowing orange. Deep-red, lobed, and heavy with juice, Costoluto is a traditional Italian favorite for fresh eating.