Choose one of these tomatoes for burgers, sandwiches, or just on their own
'Costoluto Genovese' and 'CharlieChaplin' have fluted sides that make them tough to peel but great for stuffing or slicing. Of the two, the heat-loving 'Costoluto Genovese' has the most fluting and is probably better for eating, with a meaty, full-flavored, slightly tart interior.
'Stupice', a Czech variety that's modest in size and cold-tolerant, does particularly well along the coast and in other mild-summer climates.
'Green Zebra' is an heirloom open-pollinated variety that comes true from seed. Its golden yellow base is covered with green stripes, and flavor is on the tart side, too green for some. 'Tigerella' (also called 'Mr. Stripey') has met with better reviews for flavor. It's also on the small side, with yellowish stripes over a red base.