How much coffee to put in cold brew maker

Cold brew coffee is hands-down the easiest way to make cold coffee: and you don’t need any fancy gear.

All you’ll need is a large jar, jug or container that’s easy to pour your cold brew out of once its finished brewing.

If you’re using Toddy Cold Brew gear or Hario’s Mizudashi cold brew pot, you can skip the manual filtering in step five, and just use the built-in filter.

1 Litre 3 Litres

Method for 1 Litrefor 3 Litres

  1. Get your gear ready.

    You’ll need a container for brewing that’s a bit larger than the amount of coffee you want to end up with, and a way to filter the liquid once you’re done.

  2. Grind 80g coffee (for 1 litre) or 240g coffee (for 3 litres).

    The grind should be similar to grinding for pour-over or filter, about the same as coarse sand.

  3. Combine coffee and 1 litre or 3 litres water, and mix.

    Give it a good stir so all the coffee is wet.

  4. Wait.

    We leave our cold brew for 8-11 hours. Experiment and find the length you prefer.

  5. Filter out the grounds.

    If you’ve got a Chemex or Hario V60 filter, pour the liquid through that to filter our the grounds (don’t forget to rinse it with boiling water beforehand). Pour slowly, and replace the filter paper if it gets too full.

  6. Add ice, and enjoy!

    Store your cold brew in a bottle in the fridge. It’ll keep for 5-10 days depending on the freshness of the beans.


Scale it up or down

This cold brew coffee recipe scales up and down easily, as long as you stick with the ratio of 8:100 of coffee to water. But no matter how much you’re brewing, the wait time is the same, around 8-12 hours.

Want to add milk to your cold brew?

That works too! Top up your brew with a little milk. Adding milk changes the flavour and dulls a lot of the flavour in filter-roasted beans, so we recommend using an espresso blend (like Pacemaker) if you’re adding milk.

Never drink weak cold brew again

Do you like sipping your cold brew till the ice melts, but don’t like diluted cold brew? Make a tray of ice blocks using cold brew, and you’re all set.

Start exploring

Cold brew is also perfect to start combining to make other drinks and cocktails. Try it with tonic water or cocktails.

If you’ve ever made cold brew coffee at home, you know how simple the process is. But despite the straightforward steps, you always seem to get stuck on one question: Hold on a second—what’s the right cold brew coffee ratio again?

Everyone gets tripped up here. Even the pros.

We’ll show you exactly how much coffee and water you need to make cold brew coffee every time for that sweet, smooth flavor you crave.

And along the way, you’ll discover… 

  • The #1 reason people get cold brew coffee ratios wrong
  • How to slightly change the ratio for a stronger flavor
  • A few quick tips on how to always remember the right coffee ratio

Here’s our goal: by the end of this article, you’ll never have to search for the right cold brew coffee ratio on Google again.

 

SHOP COLD BREW KIT

 

How Coffee Ratios Work

 

Coffee ratios for regular cups of hot coffee are a bit of a complicated topic—at least, they look complicated at first. Let’s make them simple.

Generally, we suggest aiming for a coffee ratio of 1 gram of coffee to 15-18 milliliters of water. To make it easier to read, we write this out as 1:15 to 1:18.

Pro tip: 1 milliliter of water = 1 gram of water, so we’ll just use ‘grams’ for simplicity’s sake.

That means, for every 1 gram of coffee, you’re going to use 15-18 grams of hot water to make your final cup. This is the widely agreed upon range where your coffee tastes smooth and balanced.

  • 1:15 tastes concentrated and bright 
  • 1:16 tastes smooth and bright
  • 1:17 tastes smooth and rounded
  • 1:18 tastes lighter and rounded

These are generalizations, but most people agree: somewhere between 1:15 and 1:18 is the sweet spot for balancing concentration and extraction—there’s even research to prove it!

 

 

Why Cold Brew Coffee Ratios Are Extra Confusing

 

Cold brewing gets a little more complicated because you don’t brew coffee at a 1:15 or 1:18 ratio—you make a concentrate.

Common recipes range from a 1:2 ratio to a 1:5 (a lot more concentrated than regular coffee!).

Brewing a cold brew concentrate is possible because the brewing happens over 12+ hours, rather than a couple of minutes.

  • It takes up less space to brew
  • So you can brew larger batches at one time
  • And then dilute it to drinkable strength later

That last part is the trick—you have to be able to dilute it properly to achieve that smooth, balanced flavor. And that’s where many home cold brewers go wrong.

Read: Battle of the Brews: Hot, Iced, and Cold Brew Coffee Explained

 

How To Use Cold Brew Coffee Ratios Correctly

 

Let’s use the ESPRO Cold Brew CB1 coffee maker as a real-world example.

Here’s what we suggest:

  • 1 lb / 454 g of coffee (coarsely ground)
  • 34 oz / 1000 ml or grams of water (cold)

That’s roughly a 1:2 ratio—1 gram of coffee per 2 grams of water—very concentrated! 

(You wouldn’t want to drink it straight. Too strong.)

Remember: most people agree that a 1:15 to 1:18 ratio is ideal for balanced strength for regular coffee. However, some people like to drink their cold brew coffee a little stronger—around a 1:10 to 1:14 ratio—because once you add ice (and some of it melts), you end up at a balanced strength.

  • To dilute your cold brew to a 1:10 ratio, you need to mix 1 part concentrate and 4 parts water. Add ice and see how it tastes.
  • To dilute your cold brew to a 1:14 ratio, you’ll need to mix 1 part concentrate and 6 parts water. Add ice and see how it tastes.

You are the final say on what tastes good to you. 

If you like a more concentrated cold brew coffee, dilute to 1:10. If you want it to be less strong and more relaxing, dilute to 1:14 or 1:16.

The good thing is, you can do it all in one session. Dilute to 1:10, then take a sip and see how you like it. Then you can just keep adding a little water until it’s just right for you.

Read: Coffee Flavor 101: How to Taste Your Brew Like the Pros for Max Enjoyment

 

 

Save These 5 Ratios For Later Use

 

Write these down on a piece of paper you keep near your coffee station. With a few ratios you can always go back to, you’ll never have to ask Google for help or whip out the calculator.

These 1:2 Brewing Ratios are great for strong concentrates.

  • Big: 1 lb / 454 g of coffee — 34 oz / 1000 ml of water 
  • Small: 0.5 lb / 227 g of coffee — 17 oz / 500 ml of water

These Diluting Ratios are beloved go-to’s for making that concentrate taste balanced.

  • Strong: 1 part concentrate — 4 parts water
  • Light: 1 part concentrate — 6 parts water
  • Your Favorite: write down what you like best

With these quick calculations in your kitchen, you’ll be ready to brew or dilute delicious cold brew coffee at a moment’s notice—without lots of thinking, calculations, or searching.

 

The Last Tip: Use A Brewer With Recipe Markings

 

We know this all feels like… well… a lot.

That’s why we designed the ESPRO Cold Brew CB1 with pre-measured recipe markings, so your measurements are always visible when you make coffee.

It’s the easiest way to make cold brew without all the huss and fuss (and it’s got a few tricks up its sleeve to help you make tastier, smoother coffee).

What is the best ratio for cold brew coffee?

Most people prefer to drink cold brew with a concentrate-to-water ratio between 2:1 and 1:1. If you like stronger coffee, use the 2:1 dilution ratio. We prefer a little less intense, so we would go with 1:1.

How much coffee do I put in a 12oz cold brew?

To brew a full batch of cold brew, use 7 cups of filtered water and 12 oz. of ground coffee. To ensure full saturation of the coffee grounds, pour coffee and water into the container, starting with 4 oz. of coffee followed by 2 cups of water.

How much coffee do I need for a 32 oz cold brew?

When we make cold brew, we use 3 ounces by weight (1 cup dry) for a 32 ounce container of cold brew. That's about 24 ounces of water and a 1:8 ratio. This will leave you with a smooth, drinkable brew. If you prefer to make a concentrate, increase the amount of ground coffee you use to make the brew stronger.

How much coffee do you use for 3 cups of cold brew?

Cold Brew to Pour over Ice: use 28 grams of coffee beans per 1 cup of water (or 85 grams per 3 cups). This is the most common cold brew coffee ratio. Cold Brew to Reheat and Enjoy Hot: Prepare cold brew as above, with 1 cup of water per 28 grams of coffee beans, and then add hot water to taste.