If you’re interested in healthy living, chances are you’ve heard of kombucha. It’s a fermented tea that has become popular in recent years for its purported health benefits. Kombucha is made by adding a SCOBY to sweet tea and allowing it to ferment for several days or weeks. But what exactly is a SCOBY, and why is it important for making kombucha? In this article, we’ll take a closer look at what a kombucha SCOBY is and how it works.

What is a SCOBY?

SCOBY stands for “symbiotic culture of bacteria and yeast.” It’s a slimy, rubbery disc that floats on the surface of the sweet tea during the fermentation process. The SCOBY is made up of a variety of microorganisms, including bacteria and yeasts, that work together to ferment the tea and create the tangy, slightly effervescent drink we know as kombucha.

How is a SCOBY Made?

A SCOBY is typically made by combining a small amount of previously fermented kombucha with sweetened tea. As the tea ferments, the SCOBY grows and multiplies. Over time, the SCOBY will become thicker and more substantial, and it can be used to make multiple batches of kombucha.

What Does a SCOBY Do?

The SCOBY is the most important component of the kombucha-making process. It ferments the tea by breaking down the sugar and converting it into acids, which give kombucha its tart flavor. The SCOBY also produces carbon dioxide, which gives the drink its effervescence.

In addition to fermenting the tea, the SCOBY also plays a role in preventing the growth of harmful bacteria. Because the tea is fermented in an open container, it’s important to have a healthy SCOBY to keep bad bacteria from taking over. The microorganisms in the SCOBY work together to create an environment that’s inhospitable to harmful bacteria, which allows the good bacteria to thrive and ferment the tea.

How Do You Care for a SCOBY?

If you’re making kombucha at home, it’s important to take good care of your SCOBY. Here are a few tips for keeping your SCOBY healthy:

  • Store your SCOBY in a glass jar with a lid that’s not airtight. This will allow air to circulate around the SCOBY, which is important for its health.
  • Keep your SCOBY in a warm, dark place. Ideally, the temperature should be between 68 and 78 degrees Fahrenheit.
  • Feed your SCOBY regularly with fresh tea and sugar. This will keep it healthy and active.

How Long Does a SCOBY Last?

With proper care, a SCOBY can last for many batches of kombucha. Over time, the SCOBY will continue to grow and multiply. If you have more SCOBYs than you need, you can give them away to friends or use them for other fermented foods, like sourdough bread or kimchi.

Can You Eat a SCOBY?

While you can technically eat a SCOBY, it’s not something most people would want to do. The SCOBY is quite slimy and rubbery in texture, and its flavor is quite tart and vinegary. Some people do use SCOBYs in recipes, like blending them into smoothies or adding them to salads, but it’s not a common practice.

Is Kombucha Safe to Drink?

Kombucha is generally safe to drink, but there are some risks to be aware of. Because kombucha is a fermented drink, it can contain trace amounts of alcohol. It’s also possible for harmful bacteria to grow in the tea if the SCOBY is not healthy or if the tea is not properly sanitized. To reduce the risk of contamination, it’s important to follow proper brewing and storage practices, and to only use clean, high-quality ingredients. If you have any concerns about the safety of your kombucha, it’s best to consult with a healthcare professional.


A SCOBY is a vital component in the process of making kombucha. This slimy, rubbery disc is made up of a variety of microorganisms that work together to ferment the tea and create the tangy, slightly effervescent drink we know and love. Taking proper care of your SCOBY is essential for making high-quality kombucha, and it’s important to be aware of the potential risks associated with drinking this fermented tea.


  1. Can I use a store-bought SCOBY to make kombucha?
  • Yes, you can purchase a SCOBY online or at a health food store to use in your kombucha brewing.
  1. Can I use honey instead of sugar to feed my SCOBY?
  • While honey can be used to feed a SCOBY, it’s not recommended as it can contain antibacterial properties that may harm the microorganisms in the SCOBY.
  1. How can I tell if my SCOBY is healthy?
  • A healthy SCOBY should be white or beige in color and should have a rubbery texture. It should also produce a tangy, slightly sour smell.
  1. How long does it take to brew a batch of kombucha?
  • The length of time it takes to brew kombucha depends on several factors, including the temperature, the strength of the tea, and the health of the SCOBY. Generally, it takes between 7 and 14 days to brew a batch of kombucha.
  1. Is kombucha safe for pregnant women to drink?
  • While there is no conclusive evidence on the safety of drinking kombucha during pregnancy, it’s generally recommended that pregnant women avoid consuming unpasteurized foods and drinks, including kombucha. It’s best to consult with a healthcare professional before consuming kombucha while pregnant.

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