Cold brew is the most forgiving way to make coffee — which is exactly why most cold brew equipment is optional. Here's what's worth buying, what a mason jar already does, and the ratio that matters more than any of it.
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● Reviewed July 2026Next review: January 2027Prices and models move — tell us if something here is stale
What this is: a synthesis of design analysis, filtration mechanics, published extraction guidance, and long-run owner reports on durability and cleaning. We make cold brew weekly in a mason jar and an OXO, which covers the two designs that matter most here.
What this is not: a controlled taste panel across all six devices. Cold brew's variables — grind, ratio, time, water — swamp equipment differences, which is itself the main finding of this guide.
Prices are approximate US street prices in mid-2026.
Cold brew isn't iced coffee. Iced coffee is brewed hot and chilled. Cold brew never meets hot water at all — coffee steeps in cold or room-temperature water for 12 to 24 hours.
Temperature changes which compounds dissolve. Many of the acidic compounds that give hot coffee its brightness are far less soluble at low temperatures, so they largely stay in the grounds. Same for a portion of the bitter compounds extracted late in a hot brew. What you're left with is sweetness, body, and the heavier chocolate and nutty notes.
That's why cold brew tastes smooth, sweet and low-acid — and also why it tastes flat to people who love a bright Ethiopian pour-over. You are deliberately not extracting the compounds that make that cup exciting. It's a different drink made from the same ingredient, not a better or worse version of coffee.
The practical upshot for equipment: because you're using a coarse grind and a very long steep, cold brew is enormously forgiving. Grind inconsistency that would ruin an espresso shot is nearly invisible over 18 hours. This is the most equipment-indifferent brewing method there is — which is the honest framing for everything below.
A mason jar and a fine-mesh strainer make cold brew that is 90% as good as any device on this page. What you're buying with a dedicated maker is convenience, cleanliness, and repeatability — not meaningfully better coffee.
That's a strange thing to open a buying guide with, but it's true, and you'd work it out within two weeks of buying one anyway.
The mason jar method: coarse-ground coffee and cold water in a jar, lid on, 18 hours on the counter or in the fridge, then strain through a fine-mesh sieve lined with a paper filter. It works. It costs about $2 if you already own a jar.
What it doesn't do well is the filtering, which is genuinely tedious — pouring saturated grounds through a lined sieve without a mess takes practice, and the last of the liquid drips slowly. If you make cold brew twice a year, live with it. If you make it every week through the summer, the $40 that eliminates the annoyance is money well spent, because the best brewing device is the one whose friction is low enough that you keep using it.
Buy for the cleanup, not the cup.
The best-designed solution to the filtering problem. Grounds and water go in the upper chamber; a rainmaker lid distributes water evenly over the bed rather than channelling through one spot. When it's done, you flip a switch and gravity drains the concentrate through a fine mesh filter into a borosilicate carafe below. No pouring, no sieve, no mess.
The filtration is the real advantage. The mesh plus optional paper filter produces concentrate noticeably cleaner than a strainer — less sediment, so the last glass tastes like the first rather than like silt.
It takes counter space and has several parts to wash. If you make cold brew weekly for a season, it earns that. If you make it occasionally, the mason jar is genuinely fine.
The original, and still the standard for making a lot at once. Toddy has been making this design since 1964 and many cafés use commercial versions of it, which is a meaningful endorsement.
It's a bucket with a stopper and a thick felt filter pad. Grounds and water steep in the bucket, you pull the stopper, and concentrate drains into a glass decanter. Yield is much larger than the OXO — enough concentrate for a week or two of daily drinking.
The felt filter divides people. It produces a rounder, heavier body than paper, which many prefer. But it must be rinsed thoroughly and stored wet in the fridge in a sealed bag, and it needs replacing periodically. Forget it in a warm cupboard and you'll know immediately. If that upkeep sounds like a chore you'll skip, get the OXO.
Elegant and correct. A slim glass carafe with a full-length mesh filter basket: coffee in the basket, water in the carafe, 8–18 hours in the fridge, pull the basket out. Done.
It brews ready-to-drink cold brew rather than concentrate, which is either the appeal or the drawback depending on whether you want to dilute to taste. It fits in a fridge door, it's mostly glass, and there's essentially nothing to go wrong.
The mesh basket lets through more fines than the OXO's filtration, so expect a little sediment at the bottom. At $25 that's a fair trade — and this is the pick if you want a device rather than a jar without spending real money.
A genuinely different method and a genuinely different drink. Instead of immersion, ice water drips through a coffee bed one drop at a time — a valve you adjust to roughly one drop per second — over six to eight hours. The result, called Kyoto-style, is more delicate, more tea-like and more aromatic than immersion cold brew, because the coffee is continuously meeting fresh water rather than sitting in an increasingly saturated solution.
It is also a laboratory apparatus on your counter that requires you to dial in a drip rate and check on it. Nobody needs this.
Buy it if the process is part of the appeal and you'd enjoy tuning a valve on a Saturday. It's the only device here that produces something you genuinely cannot get from a mason jar — but that's an aesthetic argument, not a value one, and we'd rather say so.
| Maker | Method | Yield | Time | Approx. | Buy if |
|---|---|---|---|---|---|
| OXO Brew | Immersion | 32oz conc. | 12–24h | ~$50 | You make it weekly and hate straining |
| Toddy System | Immersion | 56oz conc. | 12–24h | ~$40 | You drink it daily and want volume |
| Hario Mizudashi | Immersion | 600–1000ml | 8–18h | ~$25 | You want simple, cheap and fridge-friendly |
| Yama Tower | Slow drip | ~24oz | 6–8h | ~$120+ | The process is the point |
| Mason jar + sieve | Immersion | Whatever fits | 12–24h | ~$2 | You make it occasionally — honestly, most people |
Equipment matters less than these four variables. Get them right and a mason jar beats a $120 tower used carelessly.
Grind coarse. Coarser than French press — like raw sugar or breadcrumbs. Fine grounds over an 18-hour steep over-extract into bitterness and make filtering miserable. This is the most common mistake by a wide margin. If you're grinding at home, see our grinder guide; if you're buying pre-ground, ask specifically for cold brew coarse.
Ratio: 1:5 by weight for concentrate. 100g of coffee to 500g (500ml) of water gives a concentrate you dilute roughly 1:1 with water or milk. For ready-to-drink strength straight from the brewer, go 1:8. Measure by weight — volume scoops vary enormously with grind size and roast level.
Time: 16–18 hours at room temperature, or 20–24 in the fridge. Below 12 hours it's under-extracted and sour; past about 24 it gets woody and dull. Room temperature extracts faster and, in our experience, tastes sweeter. Fridge steeping is slower and slightly cleaner. Both are fine.
Use a roast that suits it. Cold brew flatters medium and dark roasts — the chocolate, nut and caramel notes are exactly what the method extracts well. Expensive bright light roasts are largely wasted, since the acidity you paid for is what cold water leaves behind. Our Sumatra dark is the one we reach for; any good medium or dark works.
Storage: concentrate keeps sealed in the fridge for about two weeks. Once diluted, drink within three or four days.
Concentrate is, before dilution — often two to three times the caffeine of drip by volume. Diluted to drinking strength it's roughly comparable, maybe slightly higher. The confusion comes from cafés serving undiluted or lightly diluted concentrate. If cold brew makes you jittery when drip doesn't, you're probably drinking it stronger than you think.
In flavor, clearly — that's the defining characteristic. In measured pH the difference is smaller than marketing suggests; both land around pH 5–6. People who find cold brew easier on their stomach are reporting something real, but the mechanism is more complicated than "less acid," and we're not going to make a digestive-health claim we can't support.
Yes, and cold brew is the method most forgiving of it, since the long steep evens out inconsistency. Just make sure it's ground coarse — standard pre-ground drip grind is too fine and will over-extract. Freshness still matters, though less than in hot brewing: cold water extracts fewer of the volatile aromatics that fade first.
Optional, and a matter of taste. Paper produces a cleaner, more tea-like cup by catching fines and some oils. Mesh alone gives more body and texture. Try both with the same batch — split the concentrate, filter half through paper — and you'll know your preference in one sitting.
Making cold brew a few times a summer: a mason jar and a sieve. We mean it. Spend the money on better beans.
Making it every week: the OXO, for the filtering alone. Drinking it daily and wanting volume: the Toddy. Wanting a device without spending much: the Hario. Wanting a project: the Yama.
Then use a medium or dark roast that's actually fresh. Cold brew is forgiving of equipment and grind — it is not forgiving of coffee roasted eight months ago, which tastes exactly as flat cold as it does hot.