Grow huge, prize winning, beefsteak tomatoes. Big Zac was bred by Minnie Zaccaria, a New Jersey gardener whose goal was to hybridize an enormous tomato with heirloom flavor. The tomato resulting from her efforts is outstanding in every way - meaty, delicious and true-to-type each time it's planted. It consistently yields 4 to 6 pound beefsteak-type fruits. It's impeccable ancestors include both red and pink heirloom beefsteak-types. Indeterminate.