How to Make Cold Brew Coffee at Home | Smooth & Simple

Cold brew isn’t just iced coffee dumped over ice. It’s smoother, less acidic, and dead simple to make with tools you already have in the kitchen. The whole process comes down to four steps: grind, steep, strain, and dilute. Here’s exactly how to pull it off without any fancy gear.

What You’ll Need — Nothing Fancy Required

This recipe works with ordinary kitchen equipment. The basic kit includes a large jar or pitcher with a lid, a measuring cup, a fine-mesh strainer, and cheesecloth or a paper coffee filter. No special cold brew maker required — though if you want to explore dedicated gear, our roundup of the best brewers for home use covers tested options.

Most recipes call for a coarse to medium-coarse grind. Fine grounds release bitter compounds during the long steep and can clog your filter. Too coarse, and the brew comes out weak and watery.

The Ratio That Works

The most commonly cited ratio is 1:8 coffee-to-water by weight. That means one gram of coffee for every eight grams of water. A simpler version for volume measurements: use 1 cup of coarsely ground coffee to 4 cups of cold or room-temperature water. This produces a concentrate, not a drink-you-straight cup.

One tested starting point combines 250 mL (1 cup) of coffee grounds with 946 mL (4 cups) of water. Stir until every grain is saturated, then cover and walk away. The result is strong enough to dilute with water or milk before serving.

Steep Time and Temperature — Fridge or Counter?

Steep time ranges from 12 to 24 hours, and opinions differ on where to put the jar. Some recipes recommend the refrigerator; others say room temperature is fine. Refrigeration is the safer bet for quality and consistency, especially if you’re leaving it overnight (which most people do).

For your first batch, 14 hours in the fridge is a reliable starting point. Taste it at the 12-hour mark if you’re curious — the longer you steep, the stronger and more concentrated it gets. Oversteeping can produce bitter or murky coffee, so pull it when the flavor pleases you.

Straining and Storing the Finished Brew

Straining is the step that separates smooth cold brew from gritty disappointment. Pour the steeped mixture through a fine-mesh strainer lined with cheesecloth or a paper coffee filter into a clean pitcher or jar. Some brewers do a two-stage strain — coarse strain first, then a fine filter pass — to catch every bit of sediment.

Once strained, the concentrate keeps in a sealed container in the refrigerator for one to two weeks. Shorter storage is more conservative; as the Washington Post notes, the flavor degrades over time, so make what you’ll use within that window.

To serve, pour the concentrate over ice and dilute with water or milk to taste. A 1:1 ratio of concentrate to water is a common starting point, but 2:1 or 1:2 are both fine depending on how strong you like it. Add creamer, sweetener, or cinnamon if that’s your style.

Common Mistakes and Quick Fixes

Too weak? Steep longer next time or use less water in the ratio. Too bitter or muddy? Your grind was too fine or you oversteeped — switch to a coarser grind and pull the brew earlier. Clogged filter? Same problem: fine grinds. If your first batch is too strong, just dilute with water or milk rather than adjusting the steep time mid-brew.

For troubleshooting beyond the basics, the Bon Appétit and NPR recipes both note that starting simple — jar, filter, patience — gives better results than overcomplicating it with specialized equipment.