An heirloom tomato (also called heritage tomato in the UK) is an open-pollinated (non-hybrid) heirloom cultivar of tomato. The rule of thumb for any kind of heirloom in the seed world is that something has to be at least 50 years old to be an heirloom. Or it has to be associated with an area, a farm or specific family. You get all the subtle differences in heirlooms that you don’t get in the other tomatoes. Your yellow heirloom tomatoes are milder. And your red heirlooms have a lot more acidic quality.
Selection and storage
When choosing your heirloom tomatoes, be sure to pick ones that are heavy for their size and store them on the counter at home –- not in the refrigerator. Remember that heirlooms ripen quickly, so buy frequently and enjoy soon after purchase.
Preparation and serving methods