It might be the best tasting beefsteak tomato, EVER.  Don't count out this "green when ripe" tomato just because it ain't red; these 1 pound plus giants have won loads of awards around the globe, and are often on "best-of" heirloom tomato lists.  Imagine biting into a green tomato, one that you may have long overlooked, to taste a rich flavor that only seems present in small, compacted sweet cherry tomatoes.  What's even finer?  Green tomatoes produce LESS ethylene than red tomatoes, meaning they'll stay fresh for a much longer period of time!