Ah, the joyful sound of the "ping" (plunk, pop, plonk, etc.)

Congrats on your first project. Many more in the future.

Thak you!!! I've been afraid of canning in the past, but got such a great deal at the farm on raspberries, I couldn't resist. I followed the Ball book instuctions to the "T", but both kids woke from their naps early and I was tryig to keep a preschooler and toddler out of the kitche while I finished.

Oh, mogzilla, you're going to come to love that sound!

It's made by the jars sealing: as they cool, air seeps out until a vacuum seal is formed, at which point the pressure is less inside the jar than out so the lid inverts slightly. Some jars can seal while still in the water, as has been said; some take a little while (up to several hours), so you may hear random "pings" (as they are often called, though I agree it sounds more like "pop") for some time after you take the jars out. You can feel the lid on a properly sealed jar bending downward and so having no "give" to it (whereas before it goes in the canner, a jar lid can be bounced up and down a bit easily with a finger).

Congratulations on your first canning! Aren't fresh raspberries just so amazing? You'll be delighted to be eating them in the dead of winter....

Zabby

I was "taught" by my first canning teacher to always say "thanks" when one hears the "pop" of a jar sealing. ;-D I still do it to this day.

LOL, Westelle, I also say "thanks". I love the sound of the lid sealing, it makes me smile!

Annie

westelle: When I helped my Aunt can in the 50s there was no popping. They were the old time wire-bale canning jars with rubber seals. The canner looked like the All American canner still with us today. Her cellar had shelves from ceiling to earthen floor filled with home canned goods. I have such fond memories of those days.