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Can You Ferment In Stainless Steel?

As an experienced brewer, I often get questions about various brewing techniques and equipment options. One question that seems to come up a lot is whether or not you can ferment in stainless steel.

Yes, you can ferment in stainless steel. In fact, many professional and home brewers prefer stainless steel fermenters due to their durability, ease of cleaning, and temperature control capabilities.

In this blog post, I’ll dive deep into the world of stainless steel fermentation, discussing the pros and cons, as well as sharing my personal experiences.

The Advantages of Stainless Steel Fermentation


One of the most significant advantages of using stainless steel fermenters is their durability. These containers are built to last, which means you won’t have to worry about replacing them as often as you would with glass or plastic fermenters.

I’ve personally been using the same stainless steel fermenters in my brewery for over five years without any issues.

Ease of Cleaning

Another advantage of using stainless steel fermenters is how easy they are to clean. Due to the non-porous nature of the material, there’s no need to worry about residue or bacteria getting trapped in any crevices.

Simply give it a good scrub with a soft cloth and some brewing-specific cleaner, and you’re good to go.

Temperature Control

Stainless steel is an excellent conductor of heat, which means it can help maintain a consistent temperature during fermentation. This is especially important when using temperature-sensitive yeast strains or when brewing in a climate with fluctuating temperatures.

Scratch Resistance

Unlike glass and plastic fermenters, stainless steel fermenters are highly resistant to scratches. This is important because scratches can create hiding spots for bacteria, potentially leading to off-flavors or contaminated batches.

Oxygen Protection

Stainless steel fermenters often have airtight seals, which can help protect your beer from exposure to oxygen. Minimizing oxygen contact during fermentation is crucial in preventing oxidation and maintaining the overall quality of your finished beer.

The Disadvantages of Stainless Steel Fermentation


One of the most significant drawbacks of using stainless steel fermenters is their cost. They can be quite expensive compared to their glass and plastic counterparts. However, if you consider the long-term durability and other benefits, it may be worth the investment.


Stainless steel fermenters are much heavier than glass or plastic fermenters, which can make them more challenging to move around, especially when filled with liquid. This might not be an issue for some brewers, but it’s worth considering if you have limited space or mobility.

Size Limitations

Stainless steel fermenters are generally available in larger sizes, which may not be suitable for those who brew smaller batches.

However, there has been a growing market for smaller stainless steel fermenters aimed at homebrewers, so this disadvantage is becoming less of an issue.

My Personal Experience with Stainless Stee

As I mentioned earlier, I’ve been using the same stainless steel fermenter for over five years. In that time, I’ve brewed countless batches of beer, and I can confidently say that fermenting in stainless steel has improved the overall quality and consistency of my brews.

In my experience, stainless steel fermenters have provided better temperature control and protection from oxygen exposure compared to glass and plastic fermenters.

The ease of cleaning has also saved me time and effort, allowing me to focus more on perfecting my recipes and techniques.

Choosing the Right Stainless Steel Fermenter

Now that you know the benefits and drawbacks of fermenting in stainless steel, it’s essential to choose the right fermenter for your particular needs.


First and foremost, consider the size you’ll need. This will depend on the batch size you typically brew and how much space you have available. It’s always a good idea to choose a fermenter that’s slightly larger than your batch size to allow for headspace during fermentation.


Consider the features you want in a stainless steel fermenter. Some fermenters come with built-in temperature control systems, while others have simple insulation jackets. You’ll also want to consider the type of seal and airlock system, as well as any additional accessories such as racking arms or sampling ports.


Finally, consider your budget. While stainless steel fermenters can be more expensive than other options, their long-term durability and improved brewing capabilities may justify the investment. Take the time to research and compare different models to find the best fit for your needs.


In conclusion, fermenting in stainless steel is a viable and often preferable option for both professional and home brewers. The advantages of stainless steel fermentation, such as durability, ease of cleaning, and temperature control, often outweigh the few disadvantages like cost and weight.

Here are 10 facts about fermenting in stainless steel:

1. Stainless steel fermenters are highly durable and long-lasting.
2. They are easy to clean and maintain.
3. Stainless steel provides excellent temperature control during fermentation.
4. They are resistant to scratches, which can harbor bacteria.
5. Stainless steel fermenters help protect your beer from oxygen exposure.
6. The cost of stainless steel fermenters can be higher than other options.
7. Stainless steel fermenters can be heavier and more challenging to move.
8. There is a growing market for smaller stainless steel fermenters for homebrewers.
9. Choosing the right stainless steel fermenter depends on size, features, and budget needed.
10. Many brewers find that fermenting in stainless steel improves the overall quality and consistency of their beer.


Can I use plastic container for fermentation?

Yes, you can use a plastic container for fermentation. However, it is important to make sure that the plastic is food-grade and does not contain any harmful chemicals that can leach into the food during the fermentation process. Additionally, plastic containers may not be as durable as glass or ceramic containers and may scratch easily, which can create areas for bacteria to grow. It is also important to ensure that the container is properly sanitized before use.

Is it OK to make sauerkraut in stainless steel?

Yes, it is perfectly fine to make sauerkraut in stainless steel. In fact, many people prefer to use stainless steel containers because they are easy to clean and do not react with the acidic environment of the fermenting cabbage. Just make sure the container is food-grade and does not have any scratches or dents that could harbor bacteria.

Is it safe to ferment in plastic containers?

Yes, it is safe to ferment in plastic containers as long as they are made of food-grade plastic and are designed for fermentation. However, it is important to note that some types of plastic may leach harmful chemicals into the food or drink during the fermentation process, so it is best to use high-quality plastic containers that are specifically designed for fermentation. Glass or ceramic containers are also good alternatives.

Does metal interfere with fermentation?

It depends on the type of metal and concentration. Some metals, such as copper and iron, can act as catalysts for certain reactions in the fermentation process and are necessary for yeast growth. However, excessive amounts of certain metals can be toxic to yeast and hinder fermentation. It is important to monitor and control metal concentrations in the fermentation process to ensure optimal yeast growth and fermentation.

What is the best container for fermentation?

The best container for fermentation depends on the type of food being fermented. For example, ceramic crocks are ideal for fermenting sauerkraut and kimchi, while glass jars with airlocks are better for fermenting kombucha and kefir. It is important to choose a container that is non-reactive, easy to clean, and allows for proper gas exchange.

Which type of containers are not recommended for fermentation?

Some metal containers, such as those made from iron or cobber, can react with the acidic environment created during fermentation, altering the flavor of the final product. It is recommended to use glass, stainless steel, ceramic, or food-grade plastic containers with loose-fitting lids or airlocks for fermentation.

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