Thanks for this! Really helpful.

Thanks! Just the Thing!

It's a no brainer to use these jars. Our stores offer them empty in fall, and they cost 1 euro empty. The button is only an indicator. The air pressure will push down even flat lids. You cans see an indentation if you look carefully with a flat ruler. They take an effort to open and may pop. Only some mass produced goods come with a button in our stores.

Exactly what I was looking. Going to be jarring this summer and though of this idea of reusing jars BC why not?! Also trying to get into the habit of cleaning and reusing plastic containers for storage. Seems like we waste such good reusable items without even thinking about it. Thanks again.

Thanks for your video. How would you calculate processing times for the various sizes?

Would you use those jars for pressure canning?