Forget everything I wrote about preserving tomatoes in brine - they're good, but you've got all that salt water to chuck. No, the most delicious way to preserve a tomato - beating slow-roasted hands down - is to bottle them dry with a little salt and sugar. Really fabulous - and you can just pour the contents of your jar into a saucepan and heat it up for an instant sauce.
You'll need 1tsp salt and 1/2 tsp sugar per 500g of tomatoes. You must pack them as tight as you can, because they collapse down to about the halfway line. Use sterilised bottles (10 minutes at 100C in the steam oven). Pack the jars, close the lid; 60 minutes at 100C.
If you don't have a steam oven, which let's face it, most of us don't (I'm borrowing one at the moment from Miele), you can do this using the slow-water method, the quick-water method, the oven method, or a pressure cooker. All more of a faff, because you have to be keen, and, above all, you have to be there. With the steam oven: 2 minutes' to pack the jar, and that's it - Ping! and it's done. No need even to worry about whether you can fit the result into the deep freeze.
Pictures soon ... I just wanted to get the method down before I lost the piece of paper with my notes.
PS if you want some details about the other methods, let me know and I'll post them ... this experiment with bottling/canning has involved consulting a big pile of books, so, for a few days only (before I forget), I am an encyclopaedia of knowledge about preserving tomatoes in a jar.
Related posts
Things to do with tomatoes
Roasting tomatoes
Roasted tomato ketchup
Slow roasted tomatoes
Homemade tomato ketchup - and caponata-ish
Panzanilla
Chilli jam
Preserving tomatoes in brine
Tasty tomatoes to grow
Links to tomatoes on other blogs
Fried green tomatoes - haven't you always wanted to know how to make these? Here's how, from the blog at the Whistlestop Cafe
David Lebovitz's take on an heirloom tomato salad
Gazpacho from Kalyn's Kitchen
Play date at the Miele Experience Centre
How DO you say Miele?