Organically Grown Kombucha SCOBY

A living culture of exceptional quality, grown with care and dispatched fresh to order. Our organically grown kombucha SCOBYs have been at the heart of Happy Kombucha since we began — nurtured over years, lab verified, and trusted by thousands of home brewers across the UK.

Each SCOBY arrives plump, active, and ready to brew, packed in its own starter tea so you can get going straight away. Because these are genuine living cultures, no two are identical — variations in shape, tone, and texture are a mark of authenticity, not imperfection.

Size guide

*Continuous brewing volume depends on vessel size, temperature, and how frequently the brew is refreshed.
**SCOBYs are naturally occurring living cultures — all sizes are approximate and will vary.

Our promise — made with love

♥️ Grown organically with organic ingredients — GMO free, always
♥️ Lab tested by a UKAS accredited lab — not just our word for it
♥️ We're here to help you brew successfully. See our culture guarantee
♥️ One SCOBY, a lifetime of kombucha — it grows a new baby with every single brew
♥️ Packed fresh to order every day — never sitting on a shelf
♥️ Full instructions in the box, plus videos, guides and our YouTube channel whenever you need a hand
♥️ pH tested daily because we take the health of our cultures seriously
♥️ Got questions? We’re real people — reach us via our contact form, WhatsApp, or live chat. And if you need a deep dive, our Help Centre is packed with guides, tips and resources to keep your brew happy

Treat your SCOBY well and it will reward you with a lifetime of beautiful, probiotic-rich kombucha — growing a new baby culture with every brew, indefinitely.

Quick answers

How long does kombucha take to brew?
In a typical UK home, 5 to 18 days. It can take anywhere from 7 to 30 days depending on temperature, so a cool room slows it down. Start tasting from about day 3: it's ready when it tastes fruity and tart rather than like sweet tea.

What else do I need?
A glass jar a little bigger than your brew, real tea (black, green or white, never flavoured), granulated white sugar, a cotton or muslin cloth with an elastic band, and a plastic or wooden spoon.

Which size should I choose?
Brew the size your SCOBY is made for, using the size guide above. Too much tea for too small a SCOBY is the most common cause of mould. Your SCOBY grows with every brew, so you can build up slowly.

Does it come with starter tea?
Yes. Your SCOBY arrives in its pouch with its own starter tea. Add all of it to your first brew.

How long will it keep before I brew?
Anywhere from 1 to 12 months. Keep it somewhere cool and out of direct sunlight, still in its pouch, but never in the fridge.

Is it mould or yeast?
Mould is dry, fuzzy and raised, and sits on top where the SCOBY meets the air. Brown strings and bits in the liquid are normal yeast. Compare yours with our mould or yeast photo guide.

Read our full guide to brewing kombucha for step-by-step instructions.