Community favorite

Un-Sweet Black Cold Brew Coffee (48 oz)

Q: How much caffeine is in STōK Un-Sweet?

STōK lists approximately 125 mg of caffeine per 12 fl oz serving, with about four servings in a 48 oz bottle.

Q: Is STōK cold brew organic?

STōK does not list an organic certification for this product; it says the coffee is Rainforest Alliance Certified.

Widely sold unsweetened black cold brew with about 125 mg caffeine per 12 oz: smooth and easy, though some find it chemical-tasting.

7.2

Good

Coffee Reviews score

See the breakdown →

Community

—/10

Format: Ready-to-drink bottle
Caffeine: Regular
Price: —

Rainforest Alliance

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Last reviewed October 17, 2026 by the Coffee Reviews editors · How we score

Widely sold unsweetened black cold brew with about 125 mg caffeine per 12 oz: smooth and easy, though some find it chemical-tasting.

A 48 fl oz bottle of unsweetened black cold brew made from Arabica-based beans, about four 12 oz servings. STōK says it brews with Rainforest Alliance Certified coffee and lists roughly 125 mg of caffeine and 15 calories per serving. It is a supermarket staple, nicknamed TikTok's favorite coffee by one reviewer, aimed at people who drink cold brew black or add their own milk.

Best for

Black cold brew drinkers on a grocery run
Making iced coffee at home with your own milk

What we like

Unsweetened with no sugar and 15 calories per serving
About 125 mg caffeine per 12 oz serving
Rainforest Alliance Certified coffee
Easy to find in large 48 oz bottles

Watch-outs

Contains 'natural flavor' rather than coffee and water alone
No coffee origin information
Some drinkers find it chemical-tasting or burnt

How it scored

The breakdown.

7.2Good

Cup score out of 10, weighted across five factors.

Flavor & cup quality30%7.2
Smooth and bold for a mass-market cold brew; Redditors split between calling it one of the best and finding it chemical-tasting or burnt.
Quality & freshness20%7.3
Arabica-based cold brew with a two-ingredient label plus natural flavor; no roast-date information.
Value20%—
Not scored: STōK does not publish a price, and we could not verify a current retail price.
Sourcing & transparency15%6.8
Brewed with Rainforest Alliance Certified coffee, though no origins are listed.
Community love15%7.6
One of the best-known grocery cold brews, with many short-form reviews and active Reddit debate.

Creator video reviews

Watch it in action.

Independent creators, verified with YouTube and TikTok. We don’t pay for reviews and creators don’t pay us.

What people are saying

From the forums.

Verbatim from Reddit, forums and long-term owner write-ups — linked so you can read the full thread.

“I like the Stok unsweetened myself”

u/marlonbrando_1999r/coldbrew · 2026-06

“I used to get Stok all the time, and eventually got really turned off by its taste.”

u/JustinHoMir/coldbrew · 2026-06

“I can find Stok cold-brew coffee/espresso just about anywhere and it's fairly cheap.”

u/Med_stromtrooperr/bartenders · 2026-01

“If you'd like an easy way to try check out SToK. Fairly inexpensive, can be found at large store chains like Walmart.”

redundantlyHacker News · 2023-06

Details

The particulars.

Species: Arabica
Format: Ready-to-drink bottle
Caffeine: Regular · ~125 mg per serving
Ingredients: Coffee (Filtered Water, Coffee), Natural Flavor.
Nutrition (per serving): serving size: 12 fl oz (360 mL); about 4 per bottle · calories: 15 · total fat g: 0 · saturated fat g: 0 · sodium mg: 10 · total carbs g: 3 · total sugars g: 0 · added sugars g: 0 · protein g: <1 · caffeine mg: 125 · potassium mg: 290
Best brewed as: Iced / over ice, Cold brew
Certifications: Rainforest Alliance
Servings: About 4 servings of 12 fl oz per 48 fl oz bottle; STōK does not sell direct, so check local grocery prices