Some tomatoes are heirloom but look just like a normal tomato. The technical meaning of an heirloom is just meaning that it is not genetically engineered to produce non viable seeds. A hybrid variety would have been created by mixing different varieties, and therefore not good for seed saving. Somehow, heirloom has begun to mean looking fancy, exotic, weird, and different. So the beefsteak variety, an heirloom looks like a normal red tomato. These Mortgage lifters, though, they have a style of their own!