Vacuum Sealing Dry Foods in Mason Jars

Set-up to seal jars. Vacuum tube attaches to a port on top of my sealer, just behind the tubing.

I've had a vacuum sealer for several years and I love it! I bought it because I was tired of freezer-burn on the meats in the freezer, and for sealing veggies in bags to freeze... but I haven't been using of all the functions... like vacuum sealing dry goods in mason jars.

Inside of the sealing cap, and 15 bean soup mix.

Vacuum lid attached to seal jar, be sure metal jar lid is centered.

I hadn't thought much about vacuum sealing jars of purchased dried goods or home dehydrated fruits, vegetables, jerky and even mushrooms, because in my pantry they generally stay crisp, partly due to the dry heat from the furnace in winter. However, lately I cooked some stored dried beans that took forever to cook to a soft, edible stage. 

So now I'm wondering if vacuum sealing keeps moisture out, can it also keep the minimal amount of moisture (like in beans) in? It's sure worth a try since I already store most of those items in jars.

FoodSaver makes a Universal lid, but I couldn't get it to work on Rock Candy. Guess I need a wide-mouth lid sealer cap.

I'm also looking at vacuum sealing items that become rancid from exposure to oxygen, like flour and cornmeal, which I usually keep in the freezer. (One of my goals is to reduce dependence on the freezer.) Sugar and salt that are vacuum sealed won't become hard bricks either, and herbs and spices will have a much longer shelf life.

Another benefit of vacuum sealing dry goods in jars is that the lids can be re-used over and over, unlike the lids on home canned foods. For example, if you open a jar of thyme, you can take out what you need, and immediately re-seal the jar. (I just got a big bag of French Thyme from Penzey's, it's far tastier than what I grow in my garden. I'd hate for it to lose all flavor before I use it up, so it will get vacuum sealed in a pint canning jar.)

But what if there's no electricity? It's cheap and easy to make a hand cranked pump to seal jars. The pump is an automotive vacuum pump (I believe it's used to bleed brake lines), and the jar cap is made for use with electric vacuum sealers.

Wendy Dewitt has some great food storage videos on Youtube. Wendy has taught food storage for years; she's a Mormon, and the Mormon church recommends every member stores a year's supply of food. The video I watched was quite long, but she covers a lot of ground in it, including vacuum sealing jars of dried foods, where to store what, and rotation of stored goods. Her other videos are shorter segments, and more manageable if you only have a few minutes at a time to watch them.