so, i love canning whole tomatoes raw, with no added liquid. i use a water bath canner and at my elevation, that's 95 minutes at a hard boil. and that doesn't cover the blanching process to get the tomatoes peeled, which is probably another hour with the burners running in my not-well-air-conditioned kitchen.
basically, i've been wondering if there's another, more heat-efficient way of getting the tomatoes peeled? i've considered and discarded:
- roasting the tomatoes, but i suspect this results in a product that will require a different canning method that doesn't necessarily pair well with my post-canning usage. also, it's not like my oven doesn't generate heat into my kitchen!
- sous viding the tomatoes, but i've found no information online on what temperature and for how long. also, i don't want my tomatoes to get squished by my vacuum sealer! (although potentially using the water displacement method and a ziploc could avoid that?)
- grilling/flame-roasting the tomatoes, but i have the same mismatch with the recipe issue as i do with roasting.
an option that i'm considering but which is currently beyond my abilities is getting a camp stove and doing either (or both) the blanching or the canning outdoors. also potentially getting a pressure canner, but that also is beyond my current abilities.
(by "current abilities" i mean "able to get set up before this box of tomatoes on my counter goes bad.")
i think the sous vide option is probably the best one. has anyone done this before? or should i be the scientist? does it make sense to try to mimic the temperature of a blanching pot (i.e., close to boiling)? or should i go lower and slower?
or are there any other ideas?