Soybean Kefir
NT$85
Pick your flavors
OriginalBest sellerNT$85- MulberryTop fruit flavorNT$85
- CranberryFruity, sweet-tartNT$85
- StrawberrySweet jamNT$85
- MangoTropicalNT$85
- Passion fruitBright and tangyNT$85
- PineappleLight, gently sweetNT$85
Cash on delivery
Bank transferFrom soy milk
Soy milk has no lactose. So what do the cultures eat?
In milk, kefir cultures feed on lactose; soy milk has none. The answer is a prebiotic.
Probiotics
The live, friendly cultures: many lactic acid bacteria and yeasts that ferment the soy milk into kefir.
Prebiotics
Food for the friendly cultures. Ours is inulin from chicory root, the same kind found in burdock, onion, garlic and banana.
Both in one bottle
With inulin in the soy milk, the cultures have food and ferment slowly; you drink the cultures and their food together.
- Probiotics you drinkSupports digestion and regularity.
Step inside our factory
From our door to your hands, we look after every step
First step in: hands washed and sanitised, then the gloves go on.
Suited and gloved, through the air shower: our care for hygiene starts at the door.
Kefir grains, inulin and unsweetened soy milk, put together jar by jar.
We keep the soy milk at 22°C and give the grains 24 unhurried hours.
Every batch's pH is measured and logged; it is done only when the acidity is right.
Poured by hand through a steel strainer; the grains stay with us for the next batch.
Samples go to our own lab for in-house testing, so you can drink with peace of mind.
Bottled fresh, one by one, into 240 g bottles.
Each cap screwed tight, sealing in the freshness and the live cultures.
The best-before date is printed on the cap, clear at a glance.
Packed and shipped cold, from our factory into your hands.
SGS
How many live cultures in a bottle? SGS counted
The lab found 780 million per gram (7.8×10⁸ CFU/g): over 180 billion in a 240 g bottle, the most per gram of any kefir we make.
SGS report AFA25806178 · lactic acid bacteria 7.8×10⁸ CFU/g ↗Nutrition facts
What’s in a bottle of the original?
Just three ingredients: soy milk, kefir cultures and inulin (listed as chicory fiber). No added sugar: what little there is comes from the soy milk.
8.2gplant protein1.4gsugar81.6kcalenergyOriginal, per 240 g bottle
Ingredients
Soy milk (non-GMO soybeans), kefir cultures, chicory fiber
The taste
Rich soy flavor with a fresh, light tang
The soy milk flavor you know, with the tang and fine bubbles of fermentation.
Full soy flavor
Richer than plain soy milk; soy-milk lovers love it.
A fresh tang
From the lactic acid bacteria: fresh, never heavy.
Fine bubbles
Natural bubbles from the yeasts, a light sparkle on the tongue.
Before you drink
Give it a shake first
A clear layer of soy whey forms as it stands, and on fruit flavors the jam sits at the bottom. Shake gently and it’s smooth soy milk kefir.
1Chill it
Below 4°C: it tastes best cold.
2Open slowly
Twist slowly to let the gas out, then close it.
3Shake gently
A few shakes and the whey and jam blend back in.
4Pour and enjoy
Once open, keep it closed and cold; finish within 3 days.
Seven flavors
One original and six fruit flavors to mix as you like
Pick a few and switch every day. The fruit flavors keep their jam at the bottom: sweet-tart and easy to love.
Original Best seller
No added sugar: the purest fermented soy flavor
SweetnessNo added sugarMulberry Top fruit flavor
Deep purple mulberry jam, rich and sweet-tart
SweetnessCranberry Fruity, sweet-tart
Ruby cranberry jam, tangy and sweet
SweetnessStrawberry Sweet jam
Strawberry jam, sweet and easy to like
SweetnessMango Tropical
Golden mango jam, rich and smooth
SweetnessPassion fruit Bright and tangy
Passion fruit jam with seeds, bright and tangy
SweetnessPineapple Light, gently sweet
Pineapple jam, light and gently sweet
Sweetness
How to enjoy
Great at breakfast, after a workout or with oats
Swap your breakfast soy milk for a bottle
With a dan bing or a rice ball: start with the breakfast you know.
Overnight oats, or over granola
Leave it overnight in the fridge with oats and fruit for breakfast, or pour it over granola and nuts.
Add granolaNT$230›After a workout
One 240 g bottle fits right in your gym bag.
Blend a smoothie
Blend with banana, strawberries or spinach.
At the vegetarian table
Lacto-vegetarian family members can share it too; everyone picks a flavor.
Reviews
What people who drink it say
I keep buying it for breakfast. It’s delicious with a fermented enzyme drink or honey poured over it.彭 · 2025.04.07
The soy range is unexpectedly delicious. Highly recommended.Anonymous · 2025.03.15
Great for breakfast with apple and osmanthus jam.Anonymous · 2024.10.14
It’s a little thick on its own. Diluted with water kefir, it’s delicious.Anonymous · 2024.05.29
It’s also very tasty with raisins or blueberries added.彭 · 2024.04.01
Delicious and yea!蔡 卓筠 · 2024.02.26
Very tasty. It saves me the cost of buying small-producer soy milk and probiotics to make soy yogurt myself.Anonymous · 2023.11.27
My first purchase, and the delivery was surprisingly fast. My family is vegetarian, so there aren’t many yogurt drink options. The soy kefir has a gentle richness and a smooth texture. Thank you for a good product.林小姐 · 2023.07.11
Lacto-vegetarian
Why “lacto-vegetarian”?
Kefir grains are alive, and now and then they go back into milk to stay strong. We rinse them before they ferment the soy milk, but traces of milk may remain, so it is labelled lacto-vegetarian. Lacto- and lacto-ovo vegetarians can enjoy it; if you eat vegan, try our water kefir, fermented in water.
See vegan water kefirNT$85›Shelf life
Fresh for 14 days, a little different each day
The live cultures keep fermenting slowly in the fridge: mildest and smoothest in the first days, then tangier and more sparkling.
Unopened below 4°C it keeps 14 days; the date is on the cap. Once open, finish within 3 days.
At a glance
Which kefir is right for you?
Lacto-vegetarian
Soy milk kefir 240g- Unsweetened soy milk, non-GMO soybeans
- The most cultures per gram
- Seven flavors to mix
No added sugar
Original milk kefir 500g- Only the milk’s own lactose
- A big bottle for the family
New to kefir
Fruit milk kefir 240g- Jam with fruit pieces, easy to enjoy
- Eight flavors to mix
Vegan
Water kefir 330 ml- Light, fruit-and-flower ferment, vegan
- Caffeine-free, for grown-ups and kids
Delivery & payment
Kept cold all the way: home delivery or 7-ELEVEN pickup
Three chilled options on Taiwan’s main island, and chilled delivery to Penghu, Kinmen and Matsu. Choose your date at checkout.
HCT chilled home delivery
NT$150 · free from NT$999
Pick a delivery date and a preferred time window (a guide for the driver); no delivery on national holidays
Black Cat chilled home delivery
NT$160 · NT$80 from NT$1,300
Pick a date and morning or afternoon; usually no Sunday delivery
Black Cat 7-ELEVEN chilled pickup
NT$160 · NT$80 from NT$1,300
Choose a store near you; you get an SMS when it arrives
- Penghu, Kinmen and Matsu tooBlack Cat chilled home delivery, NT$320 per order (no free-shipping threshold, no cash on delivery).
- Pick a delivery date at checkoutThe carrier aims for that date; Sundays and public holidays can delay it.
- Tracking number by emailWe also email you when it is out for delivery, at the store or delivered.
- Defective, wrong or damaged? Resent or refundedSend photos of the parcel and product on LINE within 72 hours; we cover the shipping.
Payment
Card · LINE Pay · cash on delivery · bank transferFull delivery information ›Payment details ›Returns policy ›
FAQ
What customers ask us most
Can I mix flavors in one order?
Yes. Use + on each flavor above and add them together, or tap “Add one of each flavor” to try all seven.
Is there a subscription?
Yes. 14 bottles of the original for NT$1,050 (NT$75 a bottle), every week, every 2 weeks or every 3 weeks, with free HCT chilled home delivery.
What is the texture like?
Smooth and easy to drink straight from the bottle. If you love a thick texture, try our milk kefir too.
Can children and pregnant women drink it?
Children over one can have it; kids usually love the fruit flavors. If you are pregnant or follow a special diet, ask your doctor first.
Which allergens does it contain?
It contains soy, and the mango flavor also contains mango. The kefir grains have been grown in milk; we rinse them before fermenting the soy milk, but traces of milk may remain, so please avoid it if you are allergic to milk.
Can I pick it up at 7‑ELEVEN?
Yes. At checkout choose Black Cat 7‑ELEVEN chilled pickup and pick a store near you. You get an SMS when it arrives, kept cold; cash on delivery is available.
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