Heirloom tomatoes are grown from seeds that are pollinated and handed down from year to year. Unlike commercial hybrid tomatoes, which are engineered for durability, uniform color and shape (ugh!), heirlooms are natural breeds, and offer a variety of colors, shapes and textures, not to mention brilliant flavor. Each batch of this sauce is slightly different due to the natural variance in the tomatoes, but none lacks the richness inherent in an heirloom. For even more depth of flavor, use this sauce on your pasta along with a healthy drizzle of our Rosemary Extra Virgin Olive Oil.