"Clean caffeine" is printed on a lot of cans. It has no FDA definition, no certification body and no official standard, so on its own it tells you very little about what's in the drink. The ingredient list and the Nutrition Facts panel tell you a lot more.
This guide covers what that phrase does and doesn't mean, how cold brew is made, how the major ready-to-drink black cold brews compare on caffeine per fluid ounce, and a 5-point way to read any cold brew label yourself.
What "Clean Caffeine" Actually Means
Clean caffeine isn't a regulated term. There's no FDA definition, no certification body, no official standard. Brands use it to mean different things, which is why the phrase alone isn't something you can check.
What you can check is the label. Is caffeine listed as its own ingredient? Is there added sugar or a high-intensity sweetener? What else is on the list besides coffee and water?
Caffeine anhydrous, the caffeine some drinks add as a separate ingredient, is the same molecule as the caffeine in a coffee bean. The difference is where it came from and what else is in the can, and both show up on the ingredient list.
When we talk about black cold brew in this guide, we mean cold brew coffee where the caffeine comes from the coffee itself and the ingredient list has no added sugars, no sweeteners, no flavors and no added caffeine.
How Cold Brew Is Made
The Extraction Process
Cold brew coffee is made by steeping coarsely ground coffee in cold or room-temperature water for hours. This extended extraction time pulls caffeine and flavor compounds from the beans through slow diffusion rather than the rapid thermal extraction of hot water.
Cold brew can carry as much caffeine as hot coffee, and often more, depending on the ratio and steep time. Many people find it tastes smoother and less bitter than hot coffee made from the same beans.
The process is simple: ground coffee, water and time. A black cold brew doesn't need anything else in the can to taste like coffee.
How Much Caffeine Cold Brew Can Carry
A strong coffee-to-water ratio can put more than 300mg of caffeine in a 12 fl oz serving with no caffeine added as a separate ingredient. The only way to know what's in a given can is the number on its label.
Caffeine by Brand: The Complete Comparison
Not all cold brews are created equal. Caffeine content varies across brands, and the ingredient lists tell very different stories. Here's how the major players stack up, using each brand's own published figures.
Read the serving-size column first. A "per can" milligram number means nothing until you know how big the can is, so the table below adds serving size and milligrams per fluid ounce. Every figure was transcribed from a published label in September 2026 and every row names a specific SKU by size and variant, because caffeine varies between SKUs within a single brand. The full working, with sources and dates, is in our label-transcribed caffeine dataset. Where a brand publishes no caffeine figure at all, the row says so — we don't fill the gap with an aggregator's estimate.
| Brand and SKU | Serving size | Caffeine (per can/serving) | Caffeine per fl oz | Sugar | Ingredients Count | Notable Additives |
|---|---|---|---|---|---|---|
| Bare Brew (12 fl oz can) | 12 fl oz | 320mg | 26.7mg | 0g | 2 | None listed: filtered water and Honduran Arabica |
| Wandering Bear Original Black (8 fl oz can) | 8 fl oz | 200mg | 25.0mg | 0g | 2 | — |
| Wandering Bear Original Black (32 fl oz carton) | 6 fl oz | 150mg | 25.0mg | 0g | 2 | Multi-serving carton — read the serving line |
| RISE Original Black (11 fl oz can) | 11 fl oz | 270mg | 24.5mg | 0g | per label | Organic, nitrogen-infused |
| Starbucks Cold Brew Black Unsweetened (40 fl oz bottle) | 12 fl oz | 255mg | 21.3mg | 0g | per label | Multi-serving bottle |
| Death Wish Cold Brew Unsweetened (48 fl oz bottle) | 12 fl oz | 250–265mg | 20.8–22.1mg | per label | per label | — |
| Bizzy Organic Medium Roast (48 fl oz bottle) | 12 fl oz | 250mg | 20.8mg | 0g | per label | Organic, unsweetened |
| High Brew Black Triple Shot (11 fl oz can) | 11 fl oz | 225mg | 20.5mg | 0g | per label | Other High Brew SKUs are sweetened |
| La Colombe Black Unsweetened (11 fl oz can) | 11 fl oz | 220mg | 20.0mg | 1g | per label | Draft Latte SKUs add milk and sugar |
| High Brew Nitro Cold Brew, Black (10 fl oz can) | 10 fl oz | 200mg | 20.0mg | 0g | per label | Nitrogen-infused |
| La Colombe Cold Brew, Black (9 fl oz can) | 9 fl oz | 180mg | 20.0mg | 1g | per label | — |
| High Brew Black & Bold (8 fl oz can) | 8 fl oz | 140mg | 17.5mg | 0g on panel | per label | Cane sugar is a declared ingredient despite the panel rounding sugars to 0g |
| Starbucks Nitro Cold Brew Black Unsweetened (9.6 fl oz can) | 9.6 fl oz | 155mg | 16.1mg | 0g | per label | Nitrogen-infused |
| STōK Un-Sweet Black (48 fl oz bottle) | 12 fl oz | 125mg | 10.4mg | 0g | per label | Multi-serving bottle; other STōK SKUs contain milk and sugar |
| Chameleon Black Ready-to-Drink (10 fl oz) | 10 fl oz | Not published | Not published | 0g | per label | Brand publishes no caffeine figure — see note below |
| Califia Farms Pure Black Medium Roast | per label | Not published | Not published | 0g | per label | Brand publishes no caffeine figure |
About the "not published" rows. Chameleon does not publish a caffeine content for its black ready-to-drink can (UPC 851220003605) — it is absent from the product page, the brand FAQ and every label photograph we could find. Califia Farms is the same. Figures for both circulate widely on aggregator sites and in listicles, but they do not trace back to the manufacturer, so we don't repeat them. "Not published" is the honest entry. The same applies to Peet's Baridi Black and Dunkin's ready-to-drink line.
A few things jump out from this data:
Per-can numbers can mislead. Wandering Bear's 32 fl oz carton looks low at 150mg until you notice that's a 6 fl oz serving — 25.0mg per fluid ounce, in the same band as Bare Brew's 26.7mg. Starbucks' 40 fl oz bottle looks enormous at 255mg until you notice that's per 12 fl oz serving out of a bottle holding more than three of them. Divide by serving size before you compare anything.
Caffeine range is wide. Measured per 12 fl oz, the gap between Bare Brew (320mg) and STōK Un-Sweet Black (125mg per 12 fl oz serving) is 195mg. If caffeine is what you're shopping on, this difference matters.
"Zero sugar" isn't the whole label. Some zero-sugar SKUs still list flavors, emulsifiers or other ingredients. High Brew Black & Bold is a good example of why the ingredient list beats the sugar line: cane sugar is a declared ingredient even though the panel rounds sugars to 0g.
What's Actually in Your Can
FDA requires the ingredient list to name every ingredient, in order from most to least by weight. Here's what to look for in cold brew.
The Shortest Label
The shortest possible cold brew label reads: Coffee, Water. If a cold brew lists more than two ingredients, the rest of the list tells you what was added and why.
Some cold brews also list nitrogen (for nitro texture; it's an inert gas) or a trace of salt for flavor.
Other Ingredients You May See
"Natural flavors": FDA allows flavoring derived from a plant or animal source to be listed as "natural flavor", and the label doesn't have to say what's in it. If it's on the list, the drink has flavoring beyond coffee and water.
Potassium sorbate / sodium benzoate: preservatives. They're common in packaged drinks, and seeing them tells you how the maker chose to keep the product shelf-stable.
Sucralose / acesulfame potassium / stevia blends: high-intensity sweeteners. They make a drink taste sweet without adding sugar grams to the panel. If you want a sweet drink, fine. If you want black coffee, they're worth spotting.
Milk proteins / caseinates: added to create a creamy texture. They add calories, milk is a major food allergen, and they move the product from black cold brew toward a cold brew latte.
What's in a Can of Bare Brew
No sugar. No dairy. Bare ingredients, a special blend of coffee and water: filtered water and Honduran Arabica. No syrup, no cream, no sweeteners, no flavors, no gums.
Each 12 fl oz can has 320mg of caffeine, 20 calories, 0g sugar and 5g total carbohydrate. It's not recommended for children, people who are pregnant or nursing, or anyone sensitive to caffeine.
If you want to know exactly what's in the can, a two-ingredient label takes the guesswork out. Coffee. Water. Done.
How to Evaluate a Cold Brew Label
Use this 5-point framework every time you pick up a can:
1. Count the Ingredients
Two is as short as it gets. Nitrogen or salt are common third ingredients. Every ingredient after that is worth a look.
2. Check the Sugar Line, Then the Ingredient List
The sugar line should read 0g if you want an unsweetened drink. But check the ingredient list too: rounding rules mean a product can declare cane sugar as an ingredient and still print 0g of sugars on the panel.
3. Look for "Natural Flavors"
If it's listed, the manufacturer is adding flavoring that isn't coffee or water. It means the drink is more than coffee and water.
4. Verify the Caffeine Source
Check whether the caffeine comes from the coffee itself or from added caffeine anhydrous or other stimulant ingredients like guarana, yerba mate, or green tea extract added to a coffee base. If the label lists caffeine as a separate ingredient, some of the caffeine was added rather than coming from the coffee.
5. Check the Caffeine Amount Per Fluid Ounce
In a coffee-and-water product, more caffeine per fluid ounce points to a stronger coffee-to-water ratio. Always run the division yourself: a big per-can number on a big can is not the same as a strong cup. And if a brand publishes no figure at all, treat the numbers you find online as unverified.
Frequently Asked Questions
What does "clean caffeine" mean?
It's a marketing phrase with no FDA definition. Brands usually use it to mean caffeine from coffee or tea with few other ingredients, but because there's no standard, read the ingredient list rather than the phrase.
How much caffeine is in cold brew vs regular coffee?
In the table above, ready-to-drink black cold brews run from 125mg to 320mg per 12 fl oz serving, depending on the brand and brew ratio. An 8 oz cup of brewed coffee has about 95mg of caffeine (USDA FoodData Central).
How much caffeine is in a can of Bare Brew?
Each 12 fl oz can has 320mg of caffeine. FDA says up to 400mg a day is an amount not generally associated with negative effects for most healthy adults. Count every source of caffeine in your day. Bare Brew is not recommended for children, people who are pregnant or nursing, or anyone sensitive to caffeine. If you take medication or have a health condition, talk to your doctor about caffeine.
How do the canned cold brews compare per fluid ounce?
Of the SKUs in the table above, Bare Brew's 12 fl oz can is 320mg (26.7mg per fl oz), Wandering Bear Original Black is 200mg per 8 fl oz can (25.0mg per fl oz), and RISE Original Black is 270mg per 11 fl oz can (24.5mg per fl oz). At the other end, STōK Un-Sweet Black is 125mg per 12 fl oz serving (10.4mg per fl oz). All figures transcribed from published labels, September 2026; see the label-transcribed caffeine dataset for sources. Brands that publish no figure — including Chameleon and Califia Farms — are not ranked, because there is nothing verifiable to rank them on.
What's the difference between cold brew and iced coffee?
Cold brew is brewed with cold water over many hours. Iced coffee is hot-brewed coffee poured over ice. Many people find cold brew tastes smoother, and it's typically higher in caffeine per serving. They're different drinks even though both are served cold.
How should I store canned cold brew?
Follow the storage directions and best-by date printed on the can. For best taste, chill before serving.
Where does the caffeine in cold brew come from?
In a cold brew whose ingredients are coffee and water, the caffeine comes from the coffee beans. Check the label to confirm no caffeine anhydrous or other caffeine source is listed as a separate ingredient.
Where does Bare Brew's caffeine come from?
The label lists two ingredients: filtered water and Honduran Arabica coffee. No caffeine is added as a separate ingredient. Each 12 fl oz can has 320mg.
No sugar. No dairy. Bare ingredients, a special blend of coffee and water. Bare Brew is filtered water and Honduran Arabica: 320mg of caffeine per 12 fl oz can, 0g sugar, 20 calories, 5g total carbohydrate.
Keep Reading
- Cold Brew Caffeine Statistics 2026: Every Figure Transcribed From a Label
- How Much Caffeine Is in Cold Brew? (By Brand, Size & Brew Method)
- Zero Sugar Cold Brew Coffee
- Cold Brew vs Matcha
This article is general information, not medical advice. Bare Brew is a coffee drink, not a treatment for any condition. Each 12 fl oz can has 320mg of caffeine. It's not recommended for children, people who are pregnant or nursing, or anyone sensitive to caffeine. If you take medication or have a health condition, talk to your doctor about caffeine.
