Best Cold Brew Coffee Maker: From Simple to Serious

Cold brew is the simplest coffee method that exists. You combine coarsely ground coffee and cold water, wait 12–24 hours, and strain. That's it. You don't even need heat. Yet people still pay $5–$7 for a cup of cold brew at cafés, which is remarkable when you consider that making a week's supply at home costs about $4 in beans and 5 minutes of active effort.

You also don't strictly need a dedicated cold brew maker. Any jar and a strainer will work. But purpose-built brewers make the process cleaner and more convenient, and some genuinely improve the result.

The Basic Technique

Before we talk about equipment, here's the method that works regardless of what you use:

Ratio: 1:5 to 1:8 coffee to water by weight for concentrate (dilute before drinking), or 1:12 to 1:15 for ready-to-drink strength.

Grind: Coarse, like raw sugar. Finer grinds over-extract during the long steep and produce bitter, muddy cold brew.

Time: 16–20 hours at room temperature, or 20–24 hours in the refrigerator. Longer isn't better. Over-steeping produces bitterness.

Strain: Through a fine mesh strainer, cheesecloth, paper filter, or the built-in filter of your cold brew maker.

That's the whole process. Everything else is convenience.

Our Recommendations

Best Overall: Toddy Cold Brew System - $40

The Toddy has been the standard cold brew maker for decades, and for good reason. It's a simple felt-filter system: coffee and water go in the brewing container, steep overnight, then you pull the stopper and the concentrate drains through the felt filter into a glass carafe below.

The felt filter produces an exceptionally clean, smooth cold brew that's cleaner than metal mesh filters, which let oils and fines through. The concentrate stores in the fridge for up to two weeks.

The only maintenance: replace the felt filter every 10–12 uses ($3 for a two-pack). The system is simple enough that there's nothing to break.

Best Budget: Mason Jar + Nut Milk Bag - $8 total

A quart mason jar ($3) and a fine-mesh nut milk bag ($5) is the cheapest viable cold brew setup. Add grounds and water to the jar, steep, then pour through the nut milk bag into another container. The mesh bag catches the grounds, and you can squeeze out the remaining liquid.

The result is slightly less clean than the Toddy (a mesh bag doesn't filter as finely as felt), but it's perfectly good cold brew at essentially no cost.

Best for Convenience: Hario Cold Brew Bottle - $25

A slim glass bottle with a built-in mesh filter insert. Add grounds to the filter, add water to the bottle, steep in the fridge, remove the filter, and drink. The bottle stores neatly in the refrigerator door and looks elegant enough to serve from directly.

Makes about 750ml (roughly 3 servings of ready-to-drink cold brew or concentrate equivalent). The mesh filter produces slightly heavier-bodied cold brew than paper or felt filters.

Best Large Batch: OXO Good Grips Cold Brew Maker - $50

If you go through a lot of cold brew, the OXO makes 32 oz of concentrate per batch (enough for roughly 10–14 drinks when diluted). The rainmaker lid distributes water evenly over the grounds, the built-in mesh filter handles straining, and the concentrate drains directly into a glass carafe that fits in your fridge.

The drain mechanism is the key convenience feature. Just flip a switch and the concentrate flows through the filter into the carafe below. No pouring through cheesecloth, no mess.

The Overnight Shortcut: Japanese Iced Coffee (Not Cold Brew, But Worth Knowing)

Japanese iced coffee isn't cold brew, it's hot coffee brewed directly onto ice. The result is a bright, complex iced coffee that retains the acidity and flavor nuances that cold brew's long steep tends to mute. Make it with a pour-over dripper (V60, Kalita Wave) over a vessel filled with ice. Use your normal hot brew ratio but replace half the water weight with ice.

We mention it here because many people who think they want cold brew actually want iced coffee, and Japanese-style is faster (4 minutes vs 16 hours), more flavorful, and requires no special equipment beyond what you'd use for hot pour-over.

Cold Brew Concentrate vs Ready-to-Drink

Concentrate (1:5 ratio) is strong and meant to be diluted. Mix it 1:1 with water, milk, or whatever you like. The advantage: it takes up less fridge space, it lasts longer (up to two weeks refrigerated), and it's more versatile. You can make it stronger or weaker by adjusting the dilution.

Ready-to-drink (1:12 to 1:15 ratio) is brewed at drinking strength. The advantage: you pour and drink. The disadvantage: it takes up more fridge space and is best consumed within 5–7 days.

We recommend brewing concentrate. It's more practical, more flexible, and the results are more consistent.

Beans for Cold Brew

Cold brew is forgiving and works with any coffee, but medium to dark roasts are traditional favorites. The long, cold extraction pulls out chocolate, caramel, and nutty flavors beautifully while minimizing the bright acidity that lighter roasts emphasize.

That said, light-roast cold brew is having a moment. Single-origin light roasts brewed as cold brew produce a delicate, fruit-forward iced coffee that's genuinely different from the heavy, chocolatey cold brew you get from dark roasts. Worth trying.

You don't need to buy premium single-origin for cold brew. A solid medium roast from your local roaster or a reliable online source works great. Save the expensive beans for your espresso or pour-over where the flavor nuances are more apparent.

Our Bottom Line

Best overall: Toddy Cold Brew System ($40). Clean, consistent, proven.

Best budget: Mason jar + nut milk bag ($8). Honestly works great.

Best for fridge storage: Hario Cold Brew Bottle ($25). Slim, elegant, convenient.

Best for heavy cold brew drinkers: OXO Cold Brew Maker ($50). Big batches, easy drainage.

Cold brew is genuinely one of the easiest and most cost-effective coffee methods. If you're buying cold brew at a café more than once a week, making it at home will save you hundreds of dollars a year with about 5 minutes of weekly effort.