Why I started this blog about German water bath canning

This blog began with a simple question: can you safely preserve low-acid foods without a pressure canner? I couldn’t find a clear, trustworthy answer, and the best info I found was buried in private German forums, not easy to access or share. So I started writing the resource I wished existed: one that explains the traditional German water bath canning method through science, experience, and practical steps.

It started with a simple question

All I wanted was to help a friend learn to preserve some ready-to-eat soups. I didn’t expect it to be the start of something bigger.

A while back, my friend Anja asked if I canned any of the food from my garden. Eager to talk canning, I said I did and asked why she was interested. She wanted to learn. Could I point her to good resources?

I suggested the German Facebook Einkochen groups where I’d learned a lot from experienced canners. But she wasn’t on Facebook – and didn’t want to be. YouTube? Maybe, but the best videos are long and not convenient to search through.

What about a book? The classic WECK guides came to mind. But I’ve seen too many experienced canners report spoilage after following those recipes and times exactly. (Not illness – just spoilage. And that’s an important distinction.) I didn’t feel comfortable sending her off with a resource I didn’t fully trust.

That’s when I realized: I didn’t have a good answer for her. Not one that was clear, thoughtful, and grounded in real experience.

So I told her I’d teach her myself – but to do that, I needed to understand the method inside out. That’s what pushed me to start writing. This is the resource I wish I’d had when I started canning – one that doesn’t just repeat what everyone else says, but explains the rules, where they come from, and what other safe methods actually exist.

This blog is dedicated to safe, science-informed water bath canning – specifically the traditional German method. It’s the method I use in my own kitchen, and the one that’s been trusted for generations in Germany – yet it’s almost entirely unknown in the English-speaking world.

To teach it, I had to understand it

Anja is a former scientist, too. I knew I couldn’t just hand her a set of instructions and say, “Trust me, it works.” I had to be ready for her questions – not just about what to do, but why. Why do it that way and not another? Why is it safe? What’s the reasoning?

I’d done the research for myself a few years earlier and felt comfortable enough using the German method. But teaching it was another matter. I had to understand it inside out and backward.

So I dug in again. I reread studies and tracked down new ones. I rewatched hours of those German-language canning videos. I combed through forums, notes, books, and jar manufacturer guides. I wanted to be sure the German water bath method could hold up under scrutiny – and the more I looked, the more confident I felt.

Re-examining the USDA side of the story

To teach this responsibly, though, I couldn’t just look at what confirmed my existing beliefs. I needed to understand the other side, too.

That meant going back to USDA guidance, English-language canning blogs, official food safety sites, and – increasingly – the AI-powered search tools we now rely on. I didn’t want to dismiss their message out of hand. I wanted to understand what they were saying, how they were saying it, and what they were basing it on.

The USDA echo chamber online

What I found startled me.

It wasn’t the recommendation to pressure can low-acid foods – that part I already knew. What surprised me was how completely that message had taken over the internet. The same warnings were everywhere, stated as unquestionable fact, usually without sources. When sources were cited, they typically looped back to the same USDA documents, repeated and re-linked until they formed a self-reinforcing bubble.

What was missing were citations to primary scientific literature. And in the few cases where studies were cited, they often didn’t say what people claimed they did.

How USDA messaging affects canners outside the U.S.

One country’s approach to home canning had become so dominant online that it was squeezing out everything else. Not through a deliberate campaign, but through repetition, visibility, and language.

I’ve been seeing signs of that influence here in Germany, too – people posting in canning forums, worried that what they’d done safely for decades might be dangerous after all. That worries me. Not just for people like Anja, but for anyone trying to learn how to preserve food safely, using trusted methods that fall outside of U.S. doctrine.

Not an expert – but uniquely positioned and motivated

I’ll be honest: I’ve hesitated to write any of this. I double- and triple-check every claim. I look up the references behind the scientific references to make sure they hold.

I’m not a food safety authority. But I am a trained scientist with degrees in chemistry and microbiology and immunology. I’ve worked in research labs in the pharmaceutical industry and in national security, and I now work as a science writer. I know how to read and evaluate technical literature.

I also live in Germany and speak the language well enough to access both sides of the conversation. That puts me in a rare position – and it makes me feel responsible.

Because here’s what I’ve come to see: it wasn’t just tradition that made the German method work. It’s a system – a layered safety system. Clean technique. Long processing times. Spoilage checks. Common sense. None of those things alone would be enough, but together, they form a framework that’s remarkably effective – and scientifically sound. Read more about this in Seven layers of safety: why the German canning method works.

And yet, almost no one outside of Germany seems to know it exists.

In the English-speaking world, it’s almost as if this method is invisible. I want to change that. Because a country like Germany – known for precision, engineering, and food safety – has been using this approach for generations. That deserves to be understood.

I also want to be transparent about something else: this site isn’t a business. I don’t run ads, I don’t do affiliate links, and I’m not being paid to write any of this. Like many authors in Germany, I do participate in VG Wort, which pays small royalties if enough people read this (so please accept my cookies if you like my content). I cover all of the associated costs and put in my own time to build it, because I believe good information should be freely available.

I’m not promising I’ll never add a way to support the site in the future (because running a website does take time and resources) but the heart of what I share here will stay open. That’s important to me. I started Old World Preserves as a hobby project and a passion, not as a job.

Why I’m writing this blog — and who it’s for

Because if I don’t document what I’ve learned, what I’ve verified, and what I know to be both traditional and safe, who will? And if someone else does, will they be heard?

Maybe I won’t be, either. But I’m going to try. Because someone should. And because I believe that once you understand the how and the why behind this method – not just the recipes, but the reasoning – you might feel more confident, too.

That’s what this site is for. I’ll share what I’ve learned – not just how to can, but how to think about canning, so you can make informed, confident choices for your kitchen. Even if everyone else says you shouldn’t.

Whether you’re completely new to canning or just starting to question the pressure canning rules you’ve always heard, this blog is for you. I write for anyone who wants to preserve food safely, even without a pressure canner. I’ll walk you through what I’ve found, how the German water bath method actually works, and why it’s trusted – no pressure canner required.

Curious about how the whole system fits together? Start with my overview post: What you need to know about German water bath canning