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#5 – Testing Sugar Levels in Kombucha

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close up of Testing Sugar Levels in Kombucha

Both Bob and I keep a tight check on our sugar level consumption so when I started brewing my kombucha… it was only right to figure out how I was going to be able to monitor just how much sugar was still in that bottle of mine.

As we have learned through my kombucha series, the sugar in kombucha is for the culture to consume, not for you. But how long you continue the fermentation, will determine the amount of sugar left.

Most unflavored kombucha drinks have roughly 2-6 grams of sugar per 8-ounce glass. By contrast, an 8-ounce glass of orange juice has about 24g of sugar. Natural carrot juices have 13g per 8 ounces.


I don’t know why but when I say the word “refractometer,” I hear action music in the background. hehe

After talking to Bob about this dilemma, he reminded me that they use what is called a refractometer when testing our cherries and pears for their sugar level content when harvest time nears.

So bless his sweet heart.. he ordered one for me. A refractometer is an instrument used to obtain what is called a Brix reading. This simple hand-held device measures the amount of refraction (or bend) in a beam of light that passes through the liquid.

What is a Brix Scale?

“Brix” is a technical term to measure and quantify the amount that light is bent passing through a fluid. Strictly speaking, the Brix measurement is the determination of the percent of pure sucrose content in water (1 degree Brix = 1g of sucrose in 100g of solution)

It’s an inexpensive and easy piece of equipment, and every Kombucha brewer could benefit from having one. This is the (unit) that I use. It runs around $25. It comes with simple instructions, so no need to be intimidated.

Let’s Go Shopping

Prices are subject to change. I shared the most current price to use as a reference point.


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Thank you for your support! amie sue

Kombucha – Equipment Needed

What is Kombucha?

Bottling Kombucha from a  Continuous Brew

Second Fermentation of Kombucha – Adding Flavor & Effervescence

Kombucha SCOBY – Growing from Scratch

Kombucha – Ingredients Needed

Kombucha Aesthetics

Kombucha Maintenance of Continuous Brew

Kombucha Continuous Brew Method

Kombucha SCOBY Hotel

Dealing with Fruit Flies

5 thoughts on “#5 – Testing Sugar Levels in Kombucha

  1. Michele says:

    Hello, Can you tell me what sugar level you achieve for your first brewing? I add blueberries only to the brew for the second fermentation, which I let sit for about 5 days. Thank you! :)

    • amie-sue says:

      Good day Michele,

      Not too long ago, I got rid of my charts where I documented all of that info when making Kombucha. Now that I look back, why did I do that? lol If I recall correctly it was around 10-12 grams but I would let it ferment longer to bring that number down. . blessings, amie sue

  2. Steve says:

    Alcohol interferes with an accurate he is reading, how do you account for that?
    Thanks, Steve

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