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kombucha brewing container

What is the Best Jar for Brewing Kombucha?

Now What do I do?

There are several things to keep in mind when choosing a container that is best for you and your SCOBY.

The material of the container, the size of the opening, how well it holds the temperature, and the container’s capacity are all important factors to keep in mind when choosing a brewing vessel (not to mention the aesthetic of it, especially when doing continuous brew!)

Kombucha Brewing Supplies

You have some options when it comes to the material of your jar. Above all, it should be food grade–no cheap plastics or anything that will leach into your brew (more on this below).

  • Glass: This is the option we recommend. Glass is easy to clean and doesn’t leach any chemicals during fermentation. There are all kinds of fun shapes and sizes that you can choose to brew with, even ones equipped for continuous brewing if that is the route you take. PLUS, you get to see all the fun stuff that happens inside the jar during the fermentation!
  • Stainless Steel: Another good option. These can be slightly more expensive but are safe to use and easy to clean. If you want to brew more than 2-3 gallons of kombucha at a time, you’ll want to use stainless as it is much lighter in weight than glass.
  • Ceramic: If you decide to go with a continuous brewing method, ceramic is an excellent choice because it will typically be out on your counter. SCOBYs don’t exactly make for the best kitchen decor, so you can choose a pretty ceramic home for it to live in. BE CAREFUL when choosing your ceramic vessel, as some glazes are made with lead, which will leach into your brew. Choose containers that advertise as fermenting vessels or crocks and verify that the enamel is food-grade or lead-free before you buy.
  • Plastic Fermenters: You can use plastic but be sure it’s HDPE, as this type of plastic is safe for fermentation. HDPE is widely used to make fermenters for beer brewing and wine making. 
  • Plastic Spigots: Be mindful of cheap plastic spigots; they should be avoided as they can release chemicals into your batch of kombucha. If one came with your jar, the good news is that these can nearly always be swapped out with a stainless steel spigot. Any 304 stainless steel spigot should work, and we also carry them and can be found here – stainless steel spigot for kombucha.  
  • Oak Barrel: If you want to be fancy, try using an oak barrel! It imparts a unique flavor profile to your brew while also looking really cool. They make cute little one-gallon barrels that you could experiment with.

Kombucha Brew Jar Opening Size

Your SCOBY needs airflow to undergo the fermentation process properly.

A good-sized opening is around 5″-6″, like