Canning of Vegetables from the Freezer

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So today's Canning Chat is from Wendy, and her freezer is full of vegetables. She's not sure what to do. She wants to try to can them, but she’s wondering about canning of vegetables from the freezer.  

Hi, my name is Sharon Peterson, and I'm with where you can find home canning tips, tutorials, and classes. Come visit me there, and I will help you get your pantry filled. 

Video Transcript - Edited for Clarity

So let me read what she says. "Being fairly new to canning, I was wondering about canning frozen veggies, as I have so much more produce than my freezer can possibly hold. I have used the water bath method for my soft fruits from my allotment, but I'm not sure as how to can the veggies that I've already put in the freezer so they don't spoil due to work commitments. Is it necessary to have blanched the vege? Do you can it straight from the freezer? What are the canning times for frozen veggies? I really need some guidance on canning frozen veggies as space is now becoming very limited."

Okay, so there are three things I want to talk about: safety, quality, and then I have another recommendation for Wendy that I think might work better for her.

Canning of Vegetables from the Freezer: Safety Issues

So the first thing is whether it's safe. Yes.  

If you want to can your vegetables out of your freezer, it is possible to do that. You need to defrost them, warm them up, and do a hot pack. You're going to follow the exact same processing directions you would use for fresh vegetables. If it's carrots, you're going to look at the carrot directions and use those processing directions, including the blanching time. That’s how you would go about the canning of vegetables from the freezer from a safety perspective. 

Since there has been no testing done without the blanching, and I haven't seen any comments about it, I'm tempted to say no, don't blanch it, because it's probably already been blanched. But I really don't know that. So I would suggest you follow all of the directions from the beginning to end, just like you would as if it were fresh.

Canning of Vegetables from the Freezer: Quality Issues  

Which leads me to the second point: quality.  

When you have foods in the freezer, the whole freezing process does break down the food somewhat. So the food has already gotten a bit soft in the freezer. You're going to thaw it out, and then you're going to process it again in a pressure canner, because vegetables must be in a pressure canner. I am afraid you're going to end up with really soft, mushy vegetables and the quality is going to be pretty poor.  

That is why I wouldn't recommend canning of vegetables from the freezer, even though technically you could, which leads me to my third point. That's my recommendation for you. 

My Recommendation Instead of Canning Frozen Vegetables 

You said you get an allotment. So I'm assuming it's once a month or once a week, I don't know. But any new vegetables that you're getting in, can those in a pressure canner and just start eating the food out of your freezer to start freeing up that space. I think you're going to have better quality. It's going to be less work for you in the end. That would be my recommendation for you. 

So I hope that was helpful. You guys have a wonderful day, and we'll see you in the next Canning Chat. We'll talk to you later.

Canning of Vegetables from the Freezer

Related Pages

Canning Vegetables
Freezing Vegetables
Vegetable Garden

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Page last updated: 10/3/2020

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