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Why Kombucha Tastes So Different From Brand to Brand

The Good Brew Company | Why Kombucha Tastes So Different From Brand to Brand
The Environmental Impact of Kombucha - Eco-Friendly Drinks
Walk into any supermarket, and you’ll see rows of kombucha lined up in the fridge, each promising gut health, low sugar, and refreshment.

But crack open a few, and the flavours couldn’t be more different.

Some taste like fruit soda. Others are dry and tangy, with a vinegary finish. You might start wondering: Is one of them off? Or am I doing it wrong?

The answer is simpler than you think: kombucha is a living, brewed product, and the way it’s made dramatically changes the way it tastes.

In this article, we break down seven key reasons why kombucha flavour varies so much from brand to brand, from fermentation time and tea base, to pasteurisation and sweeteners, so you can choose a brew that matches your taste (and expectations).

1. Fermentation Time Changes Everything

Think of kombucha like bread or cheese: the longer it ferments, the more complex it becomes.

Short fermentation (7–10 days):

Leaves more residual sugar

Results in a sweeter, soda-like flavour

Preferred by brands targeting a broader audience

Longer fermentation (2–4 weeks):

Converts more sugar into acids and carbonation

Creates a tangier, more complex and dry taste

Often described as wine-like or sharp

At Good Brew, we use long fermentation cycles and bottle-condition each brew — meaning flavour continues to evolve naturally.

Complete Brew Kit Kombucha - Good Brew

2. Tea Base and Brewing Ingredients

Not all kombucha starts the same way. The type of tea used makes a big difference.

Tea Base Flavour Notes
Black Tea Bold, malty, deep
Green Tea Light, grassy, slightly bitter
White Tea Subtle, floral
Herbal Blends Can range from spiced to fruity

Quality also plays a role. Organic, loose-leaf teas and real botanicals produce cleaner, richer flavour compared to cheap tea bags or synthetic extracts.

Good Brew uses organic tea and whole herbs, spices, and fruits, not “natural flavouring”.

3. Pasteurised vs. Raw

Pasteurisation is typically used to make kombucha shelf-stable. But in doing so, it also flattens flavour.

Pasteurised Kombucha Raw, Unfiltered Kombucha
Shelf-stable? Yes No (must be refrigerated)
Taste Smoother, safer for mass market Tangy, evolving, sometimes unpredictable
Microbes Removed by heat Alive and active

We don’t pasteurise. Good Brew is kept cold from brew to bottle — so the taste stays alive, just like the cultures inside.

Want to know why that matters for your gut? See the research here

Kombucha Complete 6 Pack - Good Brew

4. Sweeteners, Sugar & Aftertaste

Here’s where the difference really kicks in. Some kombucha brands add sugar or sweeteners (like stevia or erythritol) after brewing to maintain a soda-like flavour.

Others, like us, let the natural fermentation do the talking.

Back-sweetened kombucha:

Tastes closer to soft drink

Can mask the underlying tea flavour

Often marketed as “zero sugar” but may contain sugar alcohols

Naturally fermented kombucha:

Less sweet, more tang

Leaves sediment, complexity, and depth

If your kombucha tastes like cordial, you’re probably drinking something designed to imitate the experience of soda — not honour the fermentation process.

5. Brand Philosophy = Brewing Style

Not every kombucha brand wants to challenge your taste buds. Many aim for predictability, same taste every time, broadest appeal possible.

At Good Brew, we see kombucha as a living, craft beverage, not a health soda. That means:

Raw ingredients

Natural carbonation

No artificial flavouring

No heat treatment
The result is a brew that evolves. One bottle might taste slightly different from the next — and that’s a sign it’s real.
Kombucha Brewery In A Box - Good Brew
Mix of All Kombucha Flavours | Good Brew

6. How to Choose the Right Kombucha for Your Taste

Kombucha is a broad category. Use this chart to guide your flavour exploration:

If You Like… Try This Kombucha Type
Soda or sweet sparkling drinks Short-fermented, sweetened, fruit-forward
Natural wine or sour beer Raw, dry kombucha with long fermentation
Herbal tea or botanicals Kombucha with infused herbs or florals
Citrus, spice or zing Kombucha with ginger, lemon, turmeric, etc.

Like coffee, it takes a few tries to find “your” style, but once you do, you won’t go back.

Need help identifying the good stuff? Read: 5 Signs Your Kombucha Might Be Dead

7. Taste Is the Proof of Authenticity

At the end of the day, taste is more than preference, it’s a clue to how your kombucha was made.

A kombucha that’s too sweet, too flat, or too clean might be missing the funk, fizz, and finish that real fermentation provides.

Our kombucha is raw, bottle-conditioned, and naturally carbonated, and if you can taste the difference, it’s because there is one.

Kombucha Brewery In A Box - Good Brew
Find Your Favourite – The Real Way

From ginger-lime to hibiscus mint, our flavours evolve naturally. Explore the Good Brew kombucha range and find the taste that actually lives up to the name.