In practical terms, Stupice is probably the earliest tomato you'll be able to grow. Unfortunately, like most early season tomatoes, it's on the smallish side: 3-4 ounces, growing in clusters of three to five.
Matina is another early season red, weighing in at 3-5 ounces, in clusters of five to nine.
Sophie's Choice is an exception to the small size of early tomatoes. It runs 6-8 ounces. It's a bit on the sweet side, compared to Stupice, which has a good, balanced tomatoey flavor.
Anna Russian comes in a little later (officially described as "early mid-season" and is more heart-shaped than round. It's large---often in the 1-lb range.
For canning you want to choose a true paste or plum tomato. They are typified by having a relatively dry flesh, and small seed cavities. Best bet for those is to contact Marianne Jones, at Mariseeds.com. She's collected plum and paste tomatoes for several years and can make recomendations.
As to the core: It's the nature of the beast. Some tomatoes have heavy cores, some have hardly any at all. While I agree with you about waste, for those with heavy cores I just cut them out before slicing. |