3 Best Pressure Cooker for Mushrooms in 2023 – Buying Guide and More

Do you want to start growing mushrooms on your farm? If so, then you need to invest in the best pressure cooker for mushrooms. There is no other way around it.

Growing Mushrooms is a completely different ball game because they are not plants. They are fungi that require a sterile environment to grow because they are prone to infections by microorganisms.

The bacteria present in the substrate (the substance on which the mycelium grows) can contaminate your fungi, hampering their growth. Eating a mushroom grown in a contaminated environment can also make you sick.

You will put the substrate in the pressure cooker and sterilize it at 15 PSI for a sustained period of time. The sterilization process eliminates all spores, fungi, and bacteria. As a result, the mycelium colonizes and thrives in its substrate unconstrained.

There are a number of good pressure cookers in the market. But our list of best pressure cookers talks about the top three models that are recommended for mushroom growers. When compiling our top picks, we took into account factors such as:

  • Price
  • PSI
  • Capacity
  • Ease of use

We’ll also look at the features that matter the most, and the factors you will need to prioritize when buying a pressure cooker for mushrooms.

Pressure Cookers Comparison Chart

Here is a full summary of top three best pressure cookers. They are all affordable, high-quality and easy to use.
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Top 3 Pressure Cookers for Mushrooms

1. Instant Pot Duo Electric Pressure Cooker

There is a good reason why this model from Instant Pot dominates the world of pressure cookers. No other brand consistently produces such high-quality pots that most people can afford. The low cost, reliability, and ease of use make this model the best option for beginning mushroom farmers.

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The Instant Pot Duo Pressure Cooker is available in several sizes. This one has a volume of 5.68 liters, which means it falls within the medium variant. There is one of 10 quarts and then a few smaller variants to choose from.

The pot is made of stainless steel which is resistant to rust and stays shiny for many years. And the black plastic handles stay cool during use. With that said, the Instant Pot is equipped with modern third-generation technology. As an added bonus, it features a microprocessor that monitors temperature and pressure to achieve the best results.

It has seven functions. You can choose a setting which suits your needs. When you aren’t using it for growing mushrooms, you can use it for pressure cooking, rice cooking, slow cooking, warming, yogurt making, sautéing, and steaming.

The cooker comes equipped with several built-in safety features. This includes a safety lock and overheats protection system.


In addition to the simple design, the Instant Pot comes with dishwasher-safe accessories.


Overall, the Instant Pot is an excellent choice if you’re looking for an affordable pressure cooker that can be used for the sterilization of substrates.


  • Material: stainless steel
  • Capacity: 68 liters
  • Weight: 8 pounds
  • Operation Mode: automatic
  • Dimensions: 38 X 12.2 X 12.48


  • Value for money
  • Dishwasher-safe accessories
  • Energy efficient
  • Readily available across the globe
  • Made of durable stainless steel
  • Versatile – can be used as a slow cooker, rice cooker, or steamer


  • The manual is not totally comprehensive. You may need to look for more information online.

2. Ninja FD401 9-in-1 Pressure Cooker

It’s almost impossible to come up with a single complaint about the Ninja FD401. It’s a drop-dead stunning kitchen appliance with a solid build.

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The Ninja FD401 has a slightly different design and appearance than the Instant Duo Electric Pressure Cooker. The main difference is that the Ninja FD401 features a reversible rack and ceramic-coated nonstick basket. It offers nine cooking modes with which you can pressure cook, steam, and do much more.

There is an intuitive control panel that allows you to adjust the cooking temperature and time according to your liking. You can opt for fast or slow cooking by raising or lowering the temperature.


The maintenance of this pressure cooker is quite easy because the ceramic-coated components are dishwasher safe.


If money is no problem for you, you can’t do better than the Ninja FD401. Almost everything else about it is good.


  • Material: plastic
  • Finish: stainless steel
  • Capacity: 8 quarts
  • Weight: 04 lbs
  • Operation Mode: Automatic
  • Dimensions: 1 X14.57 X 14.2 inches


  • Easy to use
  • Versatile
  • The stainless steel finish looks sophisticated and sleek
  • It can cook food quickly and evenly
  • It comes with a variety of cooking functions
  • It comes with a warranty


  • Heavy and bulky
  • Expensive
  • It is not suitable for cooking large quantities of food

3. All American 921 Canner Pressure Cooker

When we think of the name “All American,” what comes to mind is nothing but class, quality, and durability. The All American Pressure Cooker is pricey and there are cheaper models that will suit the needs of most small mushroom farmers. If you can stomach the price, there is not a lot else to complain about.

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This pressure cooker has a capacity of 21.5-QT. It boasts hand-cast aluminum construction and a satin finish. No doubt, it will last for decades as well as add a touch of modernity to your kitchen. It does not feature a gasket. Instead, Itt has a metal seal that doesn’t need replacement. The aluminum construction also means that it will retain heat well.

The 21.5-quart capacity means the cooker will be able to handle most of your substrate sterilization needs.


The satin and smooth finish makes this pressure cooker easy to clean. Consider hand washing because aluminum vessels aren’t suitable for dishwashers.


All American Pressure Cooker is expensive to buy, but it could pay off in the long-term. It comes equipped with a metal-to-metal seal that eliminates the need for gaskets. There is no gasket to be replaced.


  • Material: Heavy-Duty Aluminum
  • Capacity: 21.5 Quarts
  • Finish: Satin
  • Weight: 33 pounds
  • Dimensions: 14 x 13 x 14 inches


  • Heavy-duty cast aluminum construction
  • Stay-cool Bakelite top handle
  • Excellent customer service
  • The pressure cooker can be used on any cooktop, including induction cooktops
  • It has a large 21-quart capacity
  • The pressure cooker comes with a canning rack and safety vent release valve
  • Can last a lifetime


  • Not ideal for glass and ceramic cooktops
  • It is heavy and difficult to move around

How to use a pressure cooker for mushrooms

Many people think a pressure cooker is difficult to use but this is not the case. So, let’s see how to use it for mushrooms.

1. Inspect the vessel

Before using the pressure cooker, take your time to examine it to make sure there are no cracks and chips. This deserves the most serious attention because cracks and chips can allow steam to escape and burn you. The rubberized gasket must also be in good condition for the lid to close tightly.

2. Clean the components

Make sure the pressure valve is clean and free of food residue. Properly wash the pot, cover, and other components with warm, soapy water to remove debris. Rinse them well under running water. Most removable parts can go in the dishwasher, but it’s important to follow the manufacturers guidelines concerning cleaning.

3. Fill the cooker with water

To sterilize your substrate or grain pawn, you need a certain amount of water in the pressure cooker. Water is required for the formation of steam. The liquid level shouldn’t be more than 2/3 of the total capacity of the pot. You can find out how much water you need to put in the vessel in the instructions that come with the product.

4. Put the substrates

Put all the substrates you want to sterilize in the pressure cooker. After that, remove the pressure valve and properly close the lid and choose the right setting. Ensure the lid is tightly closed. Steam during cooking should escape through the valve, not the lid. The cooking temperature must remain high until the right pressure is reached. After that, you can gradually reduce the heat.

5. Final step

After sterilizing your ingredients for a specific period of time, you will want to carefully open the valve to release steam. Then open the cover and remove the sterilized substrate from the vessel. Note do not open the lid before the pressure inside the cooker has completely dropped to normal levels. Allow your pressure cooker to cool down completely before washing it.

Buying Guide on Pressure Cooker for Mushrooms

If you’re in the market for a new pressure cooker for mushrooms, here’re a few things to keep in mind.

1. Pounds per Square Inch (PSI)

The pressure cooker must reach 15 PSI to completely sterilize the substrate. All the models we’ve reviewed above can reach 15 PSI during cooking time.

2. Capacity

Pressure cookers are available in a variety of sizes from small, medium to large. The capacity of the pressure cookers is normally expressed in quarts.

If you’re a novice who is unsure whether cultivating mushrooms is for you, you probably don’t need a very large pressure cooker. Something that can hold around 3-6 liters like the Instant Pot Duo is likely to be ideal for you.

Capacity of pressure cooker
Capacity of pressure cooker

Medium models are neither huge nor small. They will hold around six to ten liters. Large models will hold at least 10 liters and are usually expensive. They will hold a lot of substrates, and for this reason, they’re recommended for large mushroom farms.

3. Material

There are pressure cookers made of stainless steel, aluminum, copper, cast iron, or tempered glass. We recommend stainless steel because it is rust-resistant, nonporous, durable, and doesn’t warp easily. As well, it looks new and shiny for many years.

4. Cleaning

Some pressure cookers are hard to clean. It is convenient to opt for a model that has dishwasher-safe components. So do a small digging before buying.

5. Compatibility with stovetops

Some pressure cookers are not suitable for all types of stovetops. For example, a model like All American Pressure Cooker is not recommended for ceramic and glass cooktops. If you have an induction cooker, make sure the cooker is ideal for induction.

6. A lid-locking safety system

Choose a cooker with a feature that prevents the cover from being lifted if the pot is still under pressure.

7. Pressure indicator

Some models come with pressure indicators or gauges that show you whether the pot is still under pressure.

Frequently Asked Questions about Pressure Cooker for Mushrooms (FAQs)

In this section, we’ll look at a few questions and answers regarding pressure cookers for mushrooms.

How does a pressure cooker work?

A pressure cooker features a very strong body, in most cases, made of stainless steel or aluminum.

Normally, it has a sealing ring that forms a pressure-tight seal between the pot and the lid. This ensures no air can get in or out when the cooker is closed.
While the food is being cooked, the water inside the pot boils and creates steam. But the vapor cannot escape outside. Instead, it is trapped inside the pot.

As more steam is created, the internal pressure increases significantly. As a result, the boiling point of water increases to around 120°C. At this higher temperature, the food cooks pretty quickly.

When can I safely open the pressure cooker?

You will want to wait until the pressure has dropped to a certain level. Every pressure cooker comes equipped with a pressure gauge to help you monitor the pressure of your cooker.

Do I need a pressure cooker for growing mushrooms?

No. It’s still possible to sterilize mushroom substrates without a pressure cooker. Instead of using pressure and heat, you can simply soak the substrates in nontoxic chemicals, such as powdered swimming pool chlorine and Hydrated Lime. Most bacteria thrive in acidic conditions. The chlorine and lime create an alkaline or a higher PH environment that kills most microorganisms present in the substrate.

What containers are safe to use with a pressure cooker?

All containers that are labeled as “oven-safe” are safe to use with a pressure cooker. You can also use non-hermetic and food-grade materials. We do not recommend that you use anything made of plastic or wood in your pressure cooker. You can use glass but you have to be careful of thermal shock. You shouldn’t put it directly from the freezer to the pressure cooker.

Is a pressure cooker dangerous?

Many people do not use pressure cookers for fear that they can explode. But modern pressure cookers are equipped with many safety features that make them almost impossible to explode. As long as you use your pressure cooker correctly, you shouldn’t have any worries about potential explosions. Make sure the lid seals properly and the pressure valve isn’t faulty before use.

Which one is the best?

We think the Instant Duo Pot offers great value for money. So if you are a beginner on a strict budget, then it could be a great choice. We recommend it for its great design, safety features, and ease of use.  

instant pot duo nova
Instant pot duo

Final Thoughts

When it comes to pressure cookers, there are a lot of options on the market. But which one is the best pressure cooker for mushroom sterilization?

To answer this question, we need to understand what mushrooms need in order to grow. Most importantly, they need sterile substrate. This means that the substrate must be free of contaminants, such as bacteria and fungi.

The best way to sterilize substrate is by using a pressure cooker. Pressure cookers work by heating the substrate to a high temperature under pressure. This process kills any contaminants that may be present.

There are many different types and sizes of pressure cookers on the market. But not all of them are equally well suited for mushroom sterilization. For example, some pressure cookers have a much higher capacity than others. And some have special features that make them better suited for this task.

When choosing a pressure cooker for mushroom sterilization, you’ll want to keep a few things in mind. First, it’s crucial to select a large cooker to accommodate the number of mushrooms you’ll be sterilizing.

Secondly, you’ll want to ensure that the pressure cooker you choose can reach and maintain the appropriate pressure level. Finally, you’ll want to consider the ease of use and cleanup when making your decision.

Thirdly, the material of the pressure cooker is also essential. You need to make sure that it is made of stainless steel or another durable material to withstand the high temperatures required for sterilization.

Finally, you also need to ensure that the pressure cooker has a pressure release valve so that you can safely release the pressure after sterilization.

We’ve just rounded up the best pressure cooker for sterilization mushrooms. You are now a click away from your ideal pressure cooker. Hopefully, you will get the right one that meets your needs to get you started.

Last update on 2023-06-07/Affiliate links / Images from Amazon Product Advertising API

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