Weck Jar FAQ and MightyNest Giveaway

August 21, 2012(updated on October 3, 2018)

plum jam

It used to be that Weck jars were precious things, hard to come by outside of Germany. Then people started discovering how pretty and useful they are. Suddenly, stores from Crate & Barrel to Williams-Sonoma and beyond began stocking them.

No explanation is needed when it comes to storing dry goods in Weck jars, but when it comes to the actual act of canning in them, newcomers sometimes need a little help. A couple years ago, I wrote a step-by-step guide to using Weck jars, and while I have no intention of reinventing that particular wheel today, I do want to pluck out a few of the most commonly asked questions about canning in Weck jars and highlight them here so that they’re easy to access.

mixed plums

How do you tell if Weck jars are sealed? You can tell that Weck jars are sealed because the little tab on the rubber seal will point downwards. You can also test your seal in much the same way that you do with Ball jars. Once the jars are cool, remove the clips and grasp the lid of the jar. Lift off the counter an inch or two. If the seal holds fast, you’re golden. If it starts to lose its seal or breaks the suction entirely, that’s a jar that needs to be refrigerated.

Can you reuse the rubber seal? In all printed materials available in the US, they don’t recommend that you use the rubber seal for Weck jars more than once. However, I’ve been told the instructions printed in other countries tell you that it is reusable until it is stretched out or begins to lose its elasticity. Because I don’t like to take chances, I replace the rubber seal with each use.

Can you pressure can in Weck jars? I have not tried it personally, but I was told that it can be done, provided you add a third clip to the lid, in order to help prevent siphoning during processing.

Is it possible to buy replacement clips? It is! You can actually easily buy replacement clips, rubber rings and even lids for Weck jars. MightyNest, sponsor of today’s giveaway sells all the replacement parts in their canning section.

multi-colored plum jam

Because Weck jars are quite a bit more expensive than traditional mason jars, I tend to save them for my favorite preserves. These are the recipes that I like so much that I tend to either keep them all for myself or share them with only those people who are truly deserving.

Plum jam is one of my most beloved preserves, because its flavor reminds me of the rummy jam my mom used to make with the fruit from our backyard trees, in Southern California, when I was very young.

For this jam, I combined 5 cups of chopped plums (a mixture of yellow and red) with 2 1/2 cups of sugar. Once the juices started to run, I cooked the fruit and sugar over high heat until the fruit broke down and the syrup thickened enough to hang off the spatula in little pink windows. A squeeze of lemon juice went in at the end for balance. Processed for ten minutes in an array of Weck jars, this is one preserve I’ll be rationing this winter, to ensure it lasts until plum season returns.

plum jam in Weck Jars

If you’ve been contemplating adding some Weck jars to your kitchen, you’re going to love today’s giveaway. It’s provided by MightyNest, an online shop and community hub designed to help people find a world of products (everything from kitchenware to personal care) that are healthy and non-toxic. Here’s what MightyNest has put together for this giveaway:

20 quart canning pot with a rack designed to hold 7 quarts
6 1-liter asparagus jars
6 1/2 liter tulip jars
6 160ml mold jars
Weck jar lifter (these are great, because they don’t catch on the clips the same way that jar lifters designed for Ball jars can).

MightyNest is also hosting a giveaway of my book over on their blog this week. If you’ve not yet gotten your copy, make sure to click over to enter!

If you’re interested in entering this giveaway, here’s how to do it.

  1. Leave a comment on this post and tell me what one change you’d like to make to your kitchenware to make it healthier. If you’re stumped for ideas, head over to MightyNest and browse their many lovely kitchen items. You’ll be chomping at the bit for something new in no time (I want everything they sell).
  2. Comments will close at 11:59 pm east coast time on Friday, August 24. Winner will be chosen at random and will be posted to the blog on Saturday, August 25, 2012.
  3. Giveaway is open to US residents.
  4. One comment per person, please. Entries must be left via the comment form on the blog, I cannot accept submissions via email.
Disclosure: MightyNest provided the jars, canner and jar lifter for this giveaway at no cost to me. I have not been compensated for my time or this post. My opinions remain mine entirely. 

Founded by two parents, MightyNest is an online store, resource center, and community dedicated to helping parents create healthy, safe homes. Our mission is to give families the ability to research, get advice, and buy natural, non-toxic products all in one place. From kitchenware to skin care, MightyNest’s safety experts have built the web’s broadest selection of products that are free from known toxic ingredients such as BPA, PVC, Phthalates, Lead, Melamine, Formaldehyde, Parabens, and more.

MightyNest is a place where people feel motivated and welcomed, not discouraged or judged; somewhere people are empowered to make changes in their lives, whether large or small. For the growing number of parents seeking high quality, healthy and safe alternatives to everyday products for their family, MightyNest is their most trusted resource.

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2,083 thoughts on "Weck Jar FAQ and MightyNest Giveaway"

  • We are currently undergoing a major health crisis with one of the kittens that were born in our home on Leap Year day this year (the Mom to these kittens being a stray we found in our barn and subsequently brought into the house). While one of us has to be on hand at home at all times until the situation resolves, the other of us has to be in another town, renovating a property that will soon be occupied by tenants.

    The one thing, above all else, that this has made very clear to us is that we need to have a healthy supply of food that is super easy to make (read: reheating only would be ideal). Dingdingding!! Canning fits the bill! Having home-canned food ready to go would have saved us many, many last-minute, unhealthy takeout meals, not to mention the wasted expense of them.

    The Weck jars are lovely and I can imagine them sitting there, patiently waiting, filled with amazing organic fruits & vegetables and pastured meats.. *sigh*

  • I am new to preserving this year was my first attempt. Now that I know it is not good to use the metal lids I will look into getting the Weck jars. I canned my blueberries and now I have an overload of muscadines to preserve.

  • I am new to canning, but LOVE it already. I will be giving my canned goodies as Christmas gifts this year, because handmade gifts are the best kind, and would love to give my friends and family items that are so much healthier than they would buy in stores. I am trying to adopt a healthier life style, with fewer preservatives and more natural ingredients/better containers/fewer toxins, etc. It would be a great addition to have the items from this give-a-way, as well as to convert me to becoming a lover of all things Weck and MightyNest. It was because of this give-a-way that I found your site, and I WILL be returning to it. Thank you! .

  • Learning how much plastics can act as harmone disruptors and the non-stick coatings on cookware may end up in our bodies, I’ve been slowly replacing these items in food use. We use Weck for canning our garden harvest when we plan to gift those jars. Less expensive other jars with rings and lids for the bulk of our canning activities.

  • I have been changing out my cookware to beautiful, vintage, enamel ware.
    No more cooking on plastic, non-stick pans for me.
    I’d like to get some more glass dishes for storage and lunches and no longer use the plastic containers I’ve been using.
    What a beautiful give away!

  • The biggest change I want to make is to get these kind of cannot supplies so I can start canning my own sauces, vegetables and preserves.

  • I would love to begin canning! The bpa in metal can lids has kept me from doing it and these glass lids are the fabulous answer to my problem! I mainly use glass in the kitchen already, but I have a very small supply of items so I would add more to my kitchen!

  • I’d like to start canning my own tomatoes and jams so that I could avoid buying tomatoes in cans lined with BPA. I’ve made the switch to dried beans but I can’t seem to get away from canned tomatoes. Making jam isn’t necessarily healthier but just seems like it would be fun.

  • My kitchen is THE place where healthy improvements in my life start. Glass jars instead of plastic Tupperware. Cloth napkins and rags instead of paper towels. Bag lunches. Nylon bags for produce instead of plastic. There is always an opportunity to improve – next (I hope) glass jars instead of plastic to hold the bulk items like oatmeal and nuts.

  • I know I need to work towards replacing my non stick skillets with a quality set of stainless steel.

  • I have been slowly switching from plastic storage containers to glass ones – I love it and want to continue until all the plastic is gone 🙂 I’m also growing as much of our food as I can and canning it for preservation. I’m going to have to try your ‘plum jam’ recipe… it looks yummy! Thank you for the chance to win these Weck jars and the canner! I’ve been wanting some Weck jars for quite awhile!!

  • Whoa! How did I miss this one? Well, my one big kitchen change is to replace all of the plastic storage containers with glass. I’m doing it: slowly, slowly. But it’s expensive! And more plastic invades the house it seems, on a regular basis.

    This is a fabulous giveaway, Marisa – thanks to you & MightyNest!

  • any of the glassware makes me swoon! And I enjoy all the glass Pyrex I have so there are a few of the bake-n-store dishes that have caught my eye!

  • More glassware and cast iron, and less plastic and non stick coatings! I’m already starting canning with my bounty this year, so that point’s kinda moot…

  • I have switched to Tattler canning lids on all my jars that aren’t Weck and what I’d like to do next is replace all my plastic canning supplies with either glass or metal. I’m thinking of the funnels, etc.

  • I am phasing out the Teflon pans in favor of cast iron. Would also like to get out of the paper towel habit.

  • What a great storage option! Fun for an oldtimey look, I would use these for giving away to friends and family!

  • I am new to canning, but LOVE it already. I will be giving my canned goodies as Christmas gifts this year, because handmade gifts are the best kind, and would love to give my friends and family items that are so much healthier than they would buy in stores. I am trying to adopt a healthier life style, with fewer preservatives and more natural ingredients/better containers/fewer toxins, etc. It would be a great addition to have the items from this give-a-way, as well as to convert me to becoming a lover of all things Weck and MightyNest. It was because of this give-a-way that I found your site, and I WILL be returning to it. Thank you! .

  • Well, it’s not exactly kitchenware but I would figure out how to stop using so many plastic ziplock baggies for all the stuff I freeze. And maybe ditch the nonstick rice cooker. But that would be a challenge. Thanks for this uh-maaaz-ing giveaway.

  • I would really like to replace my my plastic bowls with glass. The glass bowls are so much nicer to have around . And you had me at Stainless steel wine glasses.

  • I really want to add metal (non-aluminum) ice cube trays to my kitchen and reusable metal straws. I’ve wanted them for years and yet have never gotten it together enough to actually buy them. (much like my imaginary collection of weck jars) I think this blog post has helped me identify a problem I have with procrastination.

  • We are gradually getting rid of using plastic bags and also our cooking pans. We have one cast iron currently but would like to purchase a few more. I would like to get better storage options for that as well. We dehydrate a lot so we need more storage. The giveaway would be so great as we are moving into canning and sprouting our food for our family of 4. This is such a great opportunity for someone to really increase their health by winning this amazing gift. I would be so grateful myself. Thank you so much.

  • The one thing I would love to change about my kitchenware is an update to my baking pans! Mine are old, ratty and full of rust. Just plain ugly! But I want really nice baking pans, and as many cast iron as possible…thus my wish is going to be a very slow process for me.

  • I think I started canning because food looks so beautiful in jars, and these jars are beautial all on thier own.

  • I want to start remembering to carry a reusable glass bottle or drinking canister with me everywhere I go so I am never tempted to buy a plastic bottle of water.

  • Always trying to make changes in our kitchen/home for the better – glass storage and canning are major items on the list in the past few years!

  • I have been slowly building my cast iron cookware, and I would like to include some of the bakeware cast iron like the cornbread pan and a big kettle. 🙂

  • I’ve been working to replace most of the plastic items in my kitchen. My pyrex and cast iron collection is growing nicely…perhaps too nicely!

  • Thank you for the useful information on the Weck jars and having the giveaway. The Mightynest site is a great resource for those of us making changes in lifestyles. I have my eye on the stainless steel lunch containers.

  • I want to replace all of my plastic storage containers with glass. I am also in the process of replacing all my old wooden spoons with bamboo ones. This is a great giveaway and I would love to try these jars out.

  • I would like to do away with paper towels, napkins and plates. It is hard to convince my hubby. I’ve gone to waxed paper sandwich bags–love those. Also need to begin composting kitchen waste.

  • I am weeding out the plastics and replacing with glass where feasable. My canning jars are great replacements for the plastics I used to use to take my lunch to work in. I am also trying not to buy new things, if I don’t have to. Craigslist will be my best friend very soon!

  • We are left-over freaks and I have loads of plastic take-n-toss containers that get used all the time. When I hit the big time I am going to replace them all with glass or stainless containers with lids that really seal!! (I have tried discount glass containers in the past and they leaked all over the lunch boxes)

  • I’m slowly trying build up a set of sturdy, well-made stainless steel and cast iron cookware and banish all plastic food storage from my life.

  • I’d love to get all the plastic containers out of my house and also get reusable straws. I already have all cast iron and stainless pots and pans, tons of Pyrex bake ware. I’d also like to try the reusable canning lids I read about on here.

  • I need to begin composting kitchen waste. I’m checking Mighty Nest now for a cute composting container for the kitchen!

  • I am slowly tryng to replace the plastic with glass been finding some old pyrex at second hand stores it is so great to use

  • What a fantastic giveaway! I would really like to go from plastic to glass, and am in fact making some strides in that direction. But I’ve got quite a ways to go 🙂

  • As Farmer’s and producers of high quality, organic goods we are always searching for great equipment!! What is not to love!! We are replacing all food storage items with BPA free glass, and we would love to replace our non stick cook ware with enameled cast iron!!

  • This spring I transitioned over to composting all kitchen waste. My next healthy kitchen goal is to cut out paper towels or plastic food storage containers. They’re both big projects to take on!

  • I am trying to use all glass and stainless steel for my food storage and leftovers…slowly getting rid of plastics

  • Earlier this week, I discovered Weck jars on Mighty Nest. I would love to use the larger sizes for storing dry goods, especially bulk, so I can reduce the amount of plastic packaging and bags that we use.

  • I’d like to go away from plastic containers for food and move to glass containers. Is also like to get a better steamer, the one I have now is a bit of a pain to use.

  • I’d like to start replacing most of my cleaning containers with jars. Those tulip jars might do well for my latest jar idea; vinegar and lemon/orange peel cleaner……hmm would be attractive!

  • I’ve already replaced my plastic with silicone and glass. LOVE IT! I’d like a compost bin to sit on my counter and some new glass refrigerator pitchers.

  • I am working on phasing out plastic and using glass containers instead. Oh, and canning my own food helps!!

  • I would like to phase out papertowels completely (but I really love Viva papertowels) and have been slowly getting rid of all my plastic tupperware type containers and using glass storage instead.

  • Ooooh! So great! What an amazing giveaway! I still have a few non-stick pans rolling around in the cabinet, but they are on the way out. The one other item would be kids’ sippy cups. Looks like MightyNest has some great ones!

  • I keep intending to replace my plastic water bottles with the glass ones that come in the little rubber covers. We have to buy our water since our ground water on our farm is potable but … well… not really, so we refill our plastic water bottles constantly.

  • I don’t use any nonstick- only stainless, cast iron and copper cookware, which for me is major because most people I know use nonstick exclusively. But I would like to omit plastics altogether. I’m slowly phasing then out in favor of glass jars. I know lots of other people have already said that but it’s true.

  • I’d really like to phase out my plastic tupperware in favor of glass. I always worried I’d break glass storage jars, but now I worry more about all the chemicals in the plastics.

  • Anything I can do to lessen my impact!

    I’d like to switch from BPA canning jar lids. I love the idea of using Weck jars.

  • My healthier kitchen project is to get rid of all my plastic ware and replace with glassware. Slowly getting there you wouldn’t believe how much plastic you use!

  • I LOVE these jars. Saw them at the market for the first time last week, but couldn’t find a maker. AWESOME timing!

    We have elliminated plastic and chosen glass instead. Next, I will getting rid of the nonstick pans and hopefully go with more cast iron. I love a great seasoned pan! Also working on all the kid/baby gear! Amazing how much junk plastic is out there! Going bottle by bottle now…one glass for every 3 plastic! lol!

  • I’ve been lusting after a Chemex Glass Coffeemaker…but more practically I’m working on phasing out our plastic storage containers for glass or stainless. So many great options!

  • I saw an article where a family went completely green. Their pantry was a magnificent sight: All glass for snacks, canned goods and dried goods. I want to make that healthy change in my pantry as well, and I want to do this! I am s-l-o-w-l-y doing so. No more paper goods!

  • I am new to this canning business n I love it. Winning new jars would certainly make me look n feel like a pro.

  • I’ve been doing all my canning in a stock pot, using potholders for jar lifters and old mismatched canning jars with new lids. It would be so lovely to have some real equipment and beautiful jars to sit on the shelves….mmmm.

  • I have been replacing all of my old plastic kitchenware with glass and bamboo as I can afford it and I long ago got rid of my coated non-stick pans and have been buying higher quality replacements…also as I can afford them. 🙂

  • I’ve gotten rid of *most* of the plastic containers in my house. I really need/want a better canning pot. This giveaway is truly dreamy.

  • I am slowly moving to storing everything in glass jars. No more open packets open to contaminants and bugs. More money saved to spend on healthier necessities!

  • I am trying to phase out paper towels and plastic storage containers. Hard to do with a new born and a toddler.

  • I would love to get rid of all the non-stick skillets that my husband insists on having…though the non-stick pots are long gone and have been replaced with stainless steel.

  • After discovering that BPA is in everything from plastic to canned goods, I have been trying to eliminate all of these containers from my 5 year old’s food vessels. In my early 20’s I started canning and then stopped for a myriad of reasons. I’m now a 40 something stay at home mom who would love to provide the freshest most wholesome meals that I can. This canning package will jump start the plan!!!

  • I can most of my tomatoes, to control salt and quality of original product. Pressure cook dried beans, and freeze for later use, again to control salt and original product. And I love pressure canning chicken stock so it is shelf stable and ready to go.

    On the jam front, using lower amounts of sugar and making smaller batches of high quality jam with great fruit hopefully helps us be healthier!

  • I eat at least one bag of microwave popcorn a night. I work out so I am not overweight, but I haven’t converted to popping my own in some type of vessel. I would love to have the glass popcorn popper! I am going to put that on my wish list for Christmas. I could probably save myself several hundred calories every night. My workout burn will extend further!

  • My family and I are farmers, and I have not been good about food preservation in the past. I am trying to work on that, which is why this giveaway caught my eye. Nice site!

  • Personally I’m trying to cut high fructose corn syrup out of family’s diet. I love making jam’s and jellies. I just made my first batch of spaghetti sauce and oh it was so good and my tummy loved it. I’m in the process of being tested for crohn’s disease. But I’ve noticed my symptoms are much less when I can eat foods I’ve canned personally. I would love to win this prize and would put it to use right away. I would love to can more and try these jars, they look very neat! I don’t know if my canner will make it much longer, it was a hand-me-down from my Grandmother and is quite rusted and looks like it could spring a leak anytime. Someone is going to be very lucky to win this giveway, I’ve got a stainless steel canning pot on my Christmas list!