Frequently asked questions

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Whole30 Approved?

Humm Zero is not Whole30 Approved® as it contains plant-based natural sweeteners which are not approved on the Whole30 nutritional plan. Our Whole30 Approved® Humm Kombucha is made with fruit juice and contains no plant-based natural sweeteners. Look for the Whole30 Approved® logo on flavors: Strawberry Blossom, Ginger, Mixed Berry, Mango Lemon and seasonal Orange Spice.

The Basics

Fizzy, bright and noted for its probiotics and healthy qualities, kombucha is a lightly-effervescent drink made by fermenting sweet tea with live bacteria and yeast. The result is a sometimes sweet, sometimes tangy beverage.

Nope. Our kombucha is live, raw and unpasteurized. The organic raw kombucha of Humm is a fermented product — never made from concentrated kombucha culture. Our kombucha is made from a proprietary combination of bacteria and yeasts. The ingredients we start our proprietary process with are the food source for the kombucha cultures that do the fermentation.

Yes, Humm Kombucha is safe for kids. We recommend consulting with your pediatrician on any matter that concerns your children’s health, including foods and beverages that they may consume.

Our kombucha contains 14 mg of caffeine per 8 oz. serving. By comparison, a typical cup of green tea contains 35 mg of caffeine per serving and a cup of coffee has around 95 mg of caffeine.

Our kombucha will not ferment when unopened at room temperature. However, those conditions will cause a slow die-off of the beneficial bacteria and probiotics, as well as negatively impact the carbonation profile. Because our kombucha is a live and perishable product with organic juices, we strongly recommend that our kombucha be refrigerated at all times while not being consumed.

At the time of bottling, each 14 oz. bottle of Humm Kombucha contains 2 billion probiotic cultures. Our kombucha contains the Bacillus subtilis strain, which is a Non-GMO probiotic.

Because our product undergoes a natural fermentation and remains raw and alive, the sweetness (residual sugars) varies slightly from batch to batch. To ensure our finished product meets the consistency our fans and consumers expect, and to be sure the kombucha in the bottle matches what’s on the label, we add organic fruit juices and organic cane sugar as needed.

Brewing kombucha is a wonderful project and we suggest you source home-brewing knowledge and starter kombucha sets from one of the reputable suppliers on the Internet. Here is some info to help get you started:

  • Learn more about brewing your own kombucha:
  • And you’re going to need a few supplies too:

  • Humm Zero

    Humm Zero starts just like our traditional kombucha – with water, tea, and sugar! Then comes the magic: our special fermentation process gets rid of all the sugar, but still keeps all the good-for-you probiotics. Next, we add delicious flavors you love to make sure it tastes great. Then, we carbonate and throw that live, raw goodness in a can.

    Humm Zero is sweetened with Monk Fruit and Allulose. This blend of natural sweeteners has 1/10 the calories of sugar. Allulose contains 0.4 calories per gram compared to sugar, which contains 4 calories per gram of carbohydrates.

    Yep! We’re going to get a bit technical here, so bear with us. The probiotics in Humm Zero need four factors present in order to start doing their job, including a moderate pH around five, moisture, a body temperature of around 98F, and a food source (a combination of protein and carbohydrates). When you consume a Humm Zero, you check off all the boxes the probiotics need to become active!

    Yes, it sure it! Humm Zero’s all-natural sweetener, allulose doesn’t absorb, with only 1 net carb per can.


    Humm has developed a proprietary kombucha fermentation process and kombucha cultures which improve flavor consistency while maintaining a live, raw, delicious non-alcoholic beverage that is well below the 0.5% alcohol by volume (ABV) level prescribed by the TTB. Our kombucha is not 100% free of all alcohol, therefore we disclose on our label “contains a trace amount of alcohol” to notify those consumers who may have allergies or other concerns.

    Alcohol level tests are conducted in both our in-house lab and those of an independent 3rd party laboratory with accreditation certification. Such results are well below 0.5% ABV, which is the threshold to be deemed a “non-alcoholic” beverage by the TTB. Both Humm and the 3rd party lab use AOAC approved methods for testing alcohol content in kombucha.

    Most of the other verified non-alcoholic kombucha brands on the market either make their product from a kombucha concentrate OR require extensive and expensive processing to remove the alcohol, simultaneously stripping some delicate flavor, beneficial bacteria, and aroma compounds.

    It is always important for pregnant women to consult with their doctor on any health-related questions, including whether to drink kombucha. One of Humm’s founders drank kombucha throughout both of her pregnancies and has beautiful, healthy children who regularly drink Humm Kombucha.

    We suggest recovering alcoholics consult with their doctor and/or sponsor regarding how kombucha could affect their recovery. We have connected with people in recovery who enjoy both the taste and benefits of Humm Kombucha, and also received feedback from those who choose to steer clear due to personal concerns and experience. It is certainly a decision that should not be taken lightly. We clearly state on our labels that Humm “contains a trace amount of alcohol” to notify recovering alcoholics, those with strict religious beliefs, or people who have allergy concerns.