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The Secret Diary of Kombucha Kev · 4 min read

Issue 4, 7 November 2026: Same glass. Every day.

Issue 4 of The Secret Diary of Kombucha Kev, aged 46¾. In which it is seven weeks until Christmas and I am calm. (I am not calm.)

Kombucha Kev, founder of Functional Drinks Club, smiling at the Otley taproom Kombucha Kev · 7 November 2026
The Secret Diary of Kombucha Kev, aged 46¾: Same glass. Every day.

Hello. I'm Kev. I'm 46¾, with a partner who won't marry me, a daughter who finds me embarrassing, two cats, two guinea pigs and a kombucha shop in Otley. I'm not a doctor, a biohacker or an influencer. Just a normal bloke trying to look after my gut while social media tells me to rub butter in my eyes to see better.

This is my diary: what I've written, what I've been drinking, and the week's gut science, minus the hype. It lands in inboxes every Saturday at 11am. Want it? Sign up in the footer.

Issue 4. In which it is seven weeks until Christmas and I am calm. (I am not calm.)

Monday
Woke up. Had my small glass of kombucha. Did the same thing as yesterday. "Okay campers, rise and shine," I said, like Bill Murray in Groundhog Day. My daughter told me to stop doing the voice.

Tuesday
A wellness brand emailed me to ask if I'd stock their "activated" water. I asked what activated it. They said "intention". I'm still thinking about that one.

Wednesday
Someone asked what to buy her dad, who's "easing off the booze". I said: a treat, not a hint. Don't buy him a book called Mindful Living. He'll regift it by February.

Thursday
Bonfire Night. Stood in a field with a sparkler and a Root Cause ginger kombucha, feeling like the most responsible man in West Yorkshire. Wrote my name in the air with the sparkler. Spelt it wrong.

Friday
Packed a Monthly Gut Health Box with kimchi, kraut, olive oil and kombucha. It's like being sent a hamper by a mate who's slightly too much into fermentation. Which is exactly what it is.

New on the website · kombuchaclub.co.uk journal

Can you drink kombucha every day? How much is right

Can you drink kombucha every day? How much is right

The short answer is yes, but there's a right way and a wrong way to do it. This covers how much to start with, how to build up, when to drink it, how to look after your teeth, and why you should rotate it with the other 4Ks: kefir, kimchi and kraut. No prize for drinking the most. I've checked.

Read the guide →

New on the website · alcoholfreedrinksclub.com journal

What to buy someone who's "off the booze" (without making it weird)

What to buy someone who's "off the booze" (without making it weird)

The golden rule is a treat, not a hint. "Thought you'd love this" is a gift. "Thought you might need this" is an intervention with wrapping paper. These are the gifts that let them join in with the toast, the match and Friday night.

Read the gift guide →
This week in gut science, minus the hype

This week's theme: food beats pills.

Everyone's buying probiotics. Nobody's eating more veg. Michigan Medicine looked at US health survey data from 2009 to 2023. Probiotic supplement use rose 287% in adults and 786% in under-20s, but fibre intake barely moved. The lead researcher said a supplement on its own is "like picking one color out of a rainbow". If you read one item this week, make it this one. Plants first, something fermented every day, and pills are optional. (Clinical Gastroenterology and Hepatology, 7 Sept)
Read more →

Your gut bugs and your brain chemistry, measured in actual humans A UK study from the Universities of Surrey and Roehampton scanned the brains of 61 young women and sequenced their gut microbes. Certain microbial pathways were linked to levels of two key brain chemicals, GABA and glutamate, and to anxiety, mood and sleep scores. The researchers said they're "not saying that a particular gut bacterium causes anxiety". It's a link, not a lever, but it's fascinating. (Molecular Psychiatry, Sept)
Read more →

Gut clues could give premature babies a head start Washington University looked at stool samples from 129 premature babies. Genetic traces from gut bacteria and the viruses that live in them predicted a serious bowel disease up to eight days before symptoms, with 75–83% accuracy. It needs testing in more hospitals, but in a disease where every day counts, that's real hope. (Gut, 16 Sept)
Read more →

Product spotlight

Monthly Gut Health Box

Monthly Gut Health Box

£70 a month

Like having a mate in the best fermented food shop in Yorkshire

Every month I handpick raw kombucha from the best UK makers, proper kimchi and kraut, and a high-polyphenol olive oil you'll want to drink off a spoon. It's different every month, and you can pause or cancel any time. Most of us eat the same 15 foods on rotation, and this breaks the loop. It's also a cracking Christmas present for the person who has everything except kimchi.

See the box →

Same time next week: Saturday, 11am. Until then,

Kombucha Kev
Functional Drinks Club

P.S. Ordering presents? Do it early. December gets busy, and this isn't Home Alone. You won't make it to the airport in time.

Kombucha Kev, founder of Functional Drinks Club, smiling at the Otley taproom
Written by Kev

I'm Kev. Twenty years in marketing, ten of them in public health, a former big wine drinker, and now the bloke behind Functional Drinks Club in Otley. I don't drink any more. I'm still fun at parties. Mostly.

Read my story
The Secret Diary of Kombucha Kev

Liked that? There's more where it came from.

Every Saturday at 11am, I write it all down: what I've been drinking, from kombucha to alcohol-free beer, wine and spirits, what's worth your money, and the week's gut science, minus the hype. From a normal bloke with a kombucha shop, a partner who won't marry him and no jawline to speak of. Less preachy than a wellness influencer. More useful than your group chat.

  • The week's gut science, fact-checked so I don't get sued
  • Honest reviews of kombucha and alcohol-free beer, wine and spirits. No paid-for gushing
  • New bottles and box deals first

Every Saturday, 11am. Unsubscribe whenever.

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Kompassion Scotch Bonnet Chilli raw kombucha in a tall amber 330ml glass bottle with a black cap and a white label with a red flavour band. Kompassion Scotch Bonnet Chilli raw kombucha on a tree-trunk table in the Otley taproom, with Kev's tasting note: "It's like sipping Christmas through a tartan straw while someone massages your liver with jazz hands."
Kompassion Kombucha Scotch Bonnet ChilliGinger and spice
Raw Live cultures
£4.00
You + I Black Cherry raw kombucha in an amber glass bottle with a gold cap and a cream label with a botanical line drawing and a deep red band. You + I Black Cherry raw kombucha on a wooden pallet table in the Otley taproom, with Kev's tasting note: "Like a goth fruit punch that went to finishing school."
You + I Black CherryFruity
Raw Live cultures
£4.15
Pop Cultures Apple & Cardamom raw jun kombucha in an amber 330ml glass bottle with a gold cap and a colourful orange and green patchwork label. Pop Cultures Apple & Cardamom raw jun kombucha on a wooden pallet table in the Otley taproom, with Kev's tasting note: "It's like Christmas did a mic drop in your mouth."
Pop Cultures Kombucha Apple & CardamomFruity
Raw Live cultures
£4.80
The box deal Mix any 6 for 5% off, 12 for 10%, 24 for 15%.

Every maker, Gut Feeling and the basics all count. Best discount wins, nothing stacks.

Kev and clinical nutritionist James Ellis at the mics under The Health Hype Roast neon sign
The podcast

The Health Hype Roast

Me and clinical nutritionist James Ellis take one big health trend each episode and roast it. Creatine, fibre maxing, collagen, weight loss jabs: what's real, what's rubbish, and what's worth your money. Expect laughs, evidence and the odd uncomfortable truth.