We started off our canning marathon with green beans. We grow stringless varieties called Bush Lake
Blue and Slenderette so we don’t actually have to “string” them. We just break off the tough stem end and break them into inch-long pieces so they fit in the jars better. Green beans are a low-acid vegetable, so they
have to be pressure-canned in a canner that can process jars under 10 lbs of
pressure, to make sure all botulism spores are killed (it takes 240 degree heat
to kill them, not just the 212 degrees of normal boiling water). We hot-pack our beans, meaning we heat the
beans before they go into the jars, then fill them to 1” below the rim with
boiling water. A teaspoon of salt, a lid
with the seal softened in hot water, and a canning ring screwed on “finger
tight” to keep the lid in place during processing, and we’re ready to carefully
place the jars in the canner. After ten
minutes of off-gassing the steam inside the canner, we can put a weight on
the canner to start bringing it up to pressure.
The beans’ twenty-five minute timer starts when the dial shows we’ve
gotten to 10 lbs of pressure.
You could say we’re going in ascending order of messiness, because yesterday we tackled sweet corn. Naturally, the kernels have to be cut off the cob before they can be put in the jar, and it’s not a neat process. (Note to selves: next time, sweep up errant corn kernels from the floor before picking up the 22-month-old from daycare. “Yummy! Corn!” She was too fast to stop.) We also pressure-can the corn, but we “cold-pack”the jars with raw kernels before adding our boiling water. It increases the processing time, but we think it gives us crispier kernels when we open the jars in winter.
You could say we’re going in ascending order of messiness, because yesterday we tackled sweet corn. Naturally, the kernels have to be cut off the cob before they can be put in the jar, and it’s not a neat process. (Note to selves: next time, sweep up errant corn kernels from the floor before picking up the 22-month-old from daycare. “Yummy! Corn!” She was too fast to stop.) We also pressure-can the corn, but we “cold-pack”the jars with raw kernels before adding our boiling water. It increases the processing time, but we think it gives us crispier kernels when we open the jars in winter.
Finally, today was tomato juice day. A motorized juicer made short work of a table
full of tomatoes – way faster than our old hand-cranked food mill. Tomatoes have higher acid, and since acid kills the
spores that produce the botulism toxin, we can safely hot water bath our juice
by submerging the jars in a huge pot of boiling water for 40 minutes. It’s a lot faster than pressure-canning because
we don’t have to wait for all the pressure to release before taking
out the jars and starting the next batch.
But over the decades, tomato varieties
have been bred to a lower level of acidity, so we add some lemon juice to each
jar just to be safe; there’s no reason to take chances!
It has been said that there is no sweeter summer sound than
the laughter of children, the waves of the ocean, the chirp of crickets or <insert your favorite summer sound here>. For us, it’s that little metallic “tink!”
that a jar makes when its lid seals completely, as if to say “You can relax now
– it worked!”