For cold brew you want to drink over ice, start with 1 part coarse coffee to 8 parts water by weight. That means 100 grams of coffee and 800 grams of water. Steep it, strain it, and you have a smooth batch without turning your kitchen into a laboratory.
The quick answer: pick the ratio for the cup you want
A cold brew coffee ratio is simply the amount of ground coffee compared with the amount of water. The useful part is not chasing one magic number. It is deciding whether you want a ready-to-drink coffee or a concentrate you can stretch with water, milk, or ice.
Start at 1:8 for a full-flavored cold brew that is pleasant straight from the fridge. Use 1:5 when you want a concentrate, then dilute it to taste after straining. Those two starting points cover most home routines. The Specialty Coffee Association explains why a brewing ratio is such a practical way to scale a recipe: it connects the weight of your coffee and water, rather than relying on a vague scoop or a mysterious “cup.” Its guide to brewing ratios is useful context when you want to understand the math without making it the whole hobby.
Cold brew coffee ratio chart
Weighing your coffee is the easiest way to get the same result twice. Water is close enough to one gram per milliliter that a kitchen scale keeps the whole process simple. If your container has room for only a small batch, use the 500-milliliter numbers. If you are making a week’s worth, the one-liter column is the one to keep.
| Style | 500 ml water | 1 liter water | How to serve it |
|---|---|---|---|
| Concentrate, 1:5 | 100 g coffee | 200 g coffee | Dilute about 1:1 with water, milk, or ice |
| Strong, 1:7 | 71 g coffee | 143 g coffee | Good over ice or with a small splash |
| Balanced, 1:8 | 63 g coffee | 125 g coffee | Drink as-is, then adjust to taste |
| Lighter, 1:10 | 50 g coffee | 100 g coffee | A softer everyday batch |
There is no prize for making the strongest possible concentrate. A concentrate saves fridge space and makes an easy iced latte, but it uses more coffee and needs dilution. A ready-to-drink batch is simpler when you want to pour a glass before work. Start with the version that matches your real routine. Our coffee-to-water ratio guide can help if you also want a dependable starting point for hot coffee.
Use a coarse grind, then leave it alone
Cold brew needs a coarse, even grind. Think coarse sea salt, not powder. Because the grounds sit in water for many hours, a fine grind can make filtering slow and leave the last sip muddy. A coarse grind is easier to strain and gives a cleaner, more forgiving batch.
If you grind at home, begin on the coarse end of your grinder and keep it there for the first batch. If you are ordering ground coffee, choose the cold-brew option where it is available. Evolve Bean offers Ground for Cold Brew on most of the range, so you do not need a grinder to make an easy batch. Our coffee grind size chart shows how a cold-brew setting compares with French press, drip, pour-over, and espresso.
A simple cold brew method for the fridge
Use a large jar, pitcher, French press, or a dedicated cold-brew maker. Add your measured coarse coffee, then pour in cool filtered water. Stir just enough to wet every bit of coffee. Cover the container and refrigerate it for 14 to 16 hours.
When the steep is done, strain the coffee through a fine mesh filter, paper filter, or the filter built into your brewer. If you use a French press, lower the plunger slowly, then pour the coffee through a paper filter if you want less sediment. Do not leave the finished coffee sitting on the grounds while you decide what to drink. Strain it, bottle it, and move on with your day.
Keep the strained coffee cold and covered. The National Coffee Association has a dedicated cold brew resource center with safety guidance for commercial cold brew. At home, the uncomplicated move is still the smart one: make a reasonable batch, keep it refrigerated, use clean equipment, and enjoy it while it tastes fresh.
How long should cold brew steep?
Fourteen to sixteen hours in the refrigerator is a solid first run. It is long enough for a rounded, smooth cup, but short enough that you still have room to adjust. If your batch tastes thin, steep the next one for a couple more hours or use a little more coffee. If it tastes woody, dull, or overly heavy, shorten the next steep by a couple of hours.
Refrigerator time is a useful baseline because it keeps the routine repeatable, but your kitchen and equipment may still nudge the result. A wide, shallow container can cool differently than a tightly closed bottle. That is fine. The important part is choosing one setup, making a note of the steep time, and letting your taste decide whether the next batch needs a little more or less time.
Time is only one lever. Coffee amount, grind, water, and filtering all matter too. That is why changing every variable at once is a fast way to get lost. Keep the ratio and grind steady for your first two batches. Adjust one thing, taste, and write down what worked. That small bit of discipline beats guessing forever.
Concentrate versus ready-to-drink cold brew
Concentrate is brewed stronger on purpose. A 1:5 batch is not meant to be poured into a full glass and judged like regular coffee. Start by mixing equal parts concentrate and cold water, then taste. Add more water if you drink it black, or use milk when you want an easy iced latte. Ice will dilute the glass a little as it melts, which is another reason concentrate can be handy.
Ready-to-drink cold brew is less fussy. A 1:8 or 1:10 batch can go directly over ice, then take a splash of milk or syrup if that is your preference. It is the better choice for a person who wants cold coffee waiting in the fridge, not another recipe to finish at 7 a.m.
Both approaches are valid. The ratio is a tool, not a personality test. Choose concentrate when flexibility matters. Choose ready-to-drink when convenience matters. Either way, a scale and a coarse grind do the heavy lifting. Once you know your preferred recipe, measuring takes less time than hunting down a forgotten online recipe every weekend.
What coffee tastes good in cold brew?
Cold brew tends to bring forward body, sweetness, chocolate, caramel, and nutty notes. A medium or medium-dark coffee is an easy starting point because it has enough depth to stay interesting over ice without becoming harsh. Common Ground has cocoa, nutty sweetness, caramel, and citrus, all useful notes for an everyday cold brew. For a darker direction, Waypoint is rich and full-bodied with a smooth finish.
Flavored coffee has a place here too. Cold brew is an easy canvas for caramel, vanilla, and dessert-style notes, especially when you are adding milk. Slow Melt is a natural fit for a creamy iced coffee, while Coastal brings caramel-and-vanilla character to a glass over ice. If you need a late-day version, Unwind decaf lets you keep the ritual without turning bedtime into a negotiation.
Fix a batch that tastes off
If cold brew tastes weak, first check the ratio. A ready-to-drink batch may simply need more coffee next time, moving from 1:10 to 1:8. If it still feels hollow, steep it a little longer. If it tastes bitter, woody, or heavy, shorten the steep before changing the ratio. A very fine grind can also leave too much sediment and make the cup feel rough.
If it tastes too strong, dilution is the easy fix. Add cold water, milk, or more ice a little at a time. Do not throw out a concentrate because it tastes intense on its own. That is exactly what it was built to do. When the batch is close but not perfect, write down the coffee, ratio, steep time, and what you would change. Your next batch will be better for it.
Make the next batch easier
Make one bottle of cold brew at a time, choose a ratio that fits how you serve it, and keep your notes short. Coffee amount, water amount, steep time. That is all you need. Once a batch tastes right, repeat it until it becomes automatic. Rinse the filter and container as soon as the batch is strained, too. Starting with clean equipment is a small detail that keeps old oils and grounds from getting in the way of the next coffee.
For a little more brewing help, see the French press ratio guide or browse the full Evolve Bean coffee range to choose a bag and grind that fit the way you drink coffee. Good cold brew is not complicated. It is a coarse grind, a measured ratio, enough time, and a glass you are happy to reach for.
Frequently asked questions
What is the best cold brew coffee ratio?
For cold brew you plan to drink straight, start with 1 part coffee to 8 parts water by weight. For a concentrate you will dilute, start closer to 1:5. The right choice depends on how you plan to serve it, not on a single universal recipe.
How long should cold brew steep?
Start with 14 to 16 hours in the refrigerator. A shorter steep can taste thin, while a much longer one can become woody or dull. Taste your first batch, then adjust the next one by a couple of hours if needed.
Should cold brew coffee be ground coarse or fine?
Use a coarse grind. It is easier to filter, leaves less sediment, and gives you more room to fine-tune the brew without a harsh finish. Evolve Bean offers a ground-for-cold-brew option on most coffees if you do not have a grinder.
Do I need to dilute cold brew concentrate?
Usually, yes. Start with equal parts concentrate and cold water, milk, or ice, then taste. Some people prefer it stronger and some lighter, so dilution is where you make the concentrate work for your own cup.
KEEP READING
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A practical coffee grind size chart for drip, French press, espresso, cold brew, and pour-over, plus simple fixes for a cup that tastes off.
How Much Coffee Grounds Per Cup? A Simple Ratio Guide
How much coffee grounds per cup to use, in grams, tablespoons, and simple ratios for drip coffee, French press, pour-over, and cold brew.
French Press Coffee Ratio: An Easy, Better Cup
Use this French press coffee ratio chart to measure coffee and water for a balanced, full-bodied cup, then adjust it to your taste.