A cold brew is a brilliant cup of coffee enjoyed during the summer as an alternative to a beloved coffee served piping hot during the winter. It is one of the easiest coffee‘s to brew as few ingredients and equipment is needed. One thing you need to get right is the grind size and use the best grind for cold brew.
size matters! And in the case of cold brew, the bigger, the better. If you are in a rush, then here is the quick answer – a coarse grind is the best grind for cold brew.
if you are curious, whole beans can be used also, but the extraction time will be increased.
Let’s get cracking on with this article and talk about cold brew and grind size and why it matters.
Cold Brew Grind Size – What Is The Best Grind For Cold Brew?
- 1 Cold Brew Grind Size – What Is The Best Grind For Cold Brew?
- 2 Does Grind Size Matter In Cold Brew?
- 3 What Type Of Grind Is Best For Cold Brew?
- 4 How Does Grind Size Affect Cold Brew?
- 5 Which Setting On The Grinder Is Used For Grinding Coffee For Cold Brew?
- 6 Can You Use Fine Grind For Cold Brew?
- 7 Do I Have To Grind Coffee Beans For Cold Brew?
- 8 Final Thoughts! Frappé-Ing It All Up – Best Grind For Cold Brew
Without a doubt, a coarse grind size is best for making a cold brew coffee. If you use a fine grind, or a grind size that is a finer grind than a coarse grind, your coffee grounds will clump together, which is less than ideal for extracting your cold brew. Clumping is not good for any coffee brewing method.
Ideally, you should look at the settings on your coffee grinder and use the largest grind size that it will permit. You will get a much better and fresher cup of coffee with the maximum flavor when you grind your beans immediately before you start brewing.
Pre-ground coffee does not have that freshness factor, as once your beans have been ground the degradation of them starts to accelerate.
Does Grind Size Matter In Cold Brew?
The grind size matters for all types of coffee that you want to brew. With cold brew, the brewing time is considerably longer than what you would use for any other brewing process.
This is compounded by the fact that cold-brewed coffee is brewed at as low a water temperature as possible. This low extraction temperature extends the brewing time considerably, and thus you need to use a larger grind size.
The larger your grinds the longer the brewing process will take. Also, the colder your water, and you need water that is ice cold to draw out all the low temperature compounds and get a great tasting cold brew. Because of this typical brewing times can be as long as 12 hours to a full 24 hours.
If you use a smaller than coarse grind size, you will end up with a coffee that is over extracted and overtly bitter in taste.
Pro Tip: Brew your cold brew coffee in your fridge for best results. You can experiment with hot water and making double brewed cold brew by first brewing a batch with hot water, 96C (205F) and brewing it at room temperature.
Then remove the grounds and brew using the first round of brewed coffee but cool it in your freezer until it is almost frozen, ice crystals start to form and then add fresh grounds for a second round of brewing. This time, keep your brew in the fridge while brewing.
The result of this is a perfectly married cold brew with high temperature and low temperature compounds and a tasty double cold brewed coffee.
What Type Of Grind Is Best For Cold Brew?
Coarse grounds, without a doubt, is the best grind size for cold brew coffee grounds. If you want to try out one of my cold brew coffee speciality, then use whole beans and follow the pro tip above for making a double brewed full immersion cold brewed coffee.
I strongly advise against buying pre-ground coffee as it is highly likely that they are ground to medium grind size unless you can request a specific grind size from your retailer.
If you must use pre-ground coffee beans and have no other choice, try to buy them direct from a roaster or from a retailer that will grind them to a very coarse grind size. Ask that they use the largest possible state that it is for cold brew and, if you want, French Press coffee.
How Does Grind Size Affect Cold Brew?
The grind size affects cold brew as it has an impact on the extraction of coffee flavors and caffeine from the coffee grounds.
The finer grind size that is used for the coffee extraction process, the greater the surface area is increased and a larger amount of water is in contact with your grounds. The greater the contact area is, the shorter the contact time there should be for a brewing a great cup of coffee.
With cold brew the smaller the grind size the more you will need to reduce your steep time. This is also true for the increase in the size of your coffee grounds. As you increase the size, the contact area is decreased and the period of time, the contact time of the water and the coffee grounds needs to be increased.
Which Setting On The Grinder Is Used For Grinding Coffee For Cold Brew?
For brewing cold brew coffee, the perfect grind size is a coarse grind size, as coarse as you can get. Set your coffee grinder to as large as it will permit. This size and setting with a good steep time will result in a cold brew coffee that extracts all the low temperature compounds with a very natural hint of sweetness and no traces of the bitter compounds.
Can You Use Fine Grind For Cold Brew?
it can be done, but using the wrong grind size, even a medium-coarse grind is going to adversely affect how your cup of coffee will end up. To get a good top quality cup of coffee, be it a cold brew or an espresso or what ever, you will need to adjust appropriately the other variables, namely the brewing time.
Some coffee brewing fanatics claim that over extraction is not a problem in cold brew coffee brewing. This is not true. It is less of problem than other coffee brewing methods such as French press coffee or drip coffee, because over extraction with a cold brew is something that happens significantly slower and over a much longer period of time and is measured in hours and not minutes.
Always stick to the correct brew time. With a fine grind for cold brew, you will need to stir frequently to prevent clumping and TAFO – Test And Find Out the ideal brew time by taste testing frequently.
Do I Have To Grind Coffee Beans For Cold Brew?
you can go proper old school and brew your cold brew coffee with whole beans and enjoy a pretty amazing cup of coffee. Using whole beans your brew time is typically going to be around 24 hours at least.
If you can’t get a coarse grind, the go all in and go old school!
Final Thoughts! Frappé-Ing It All Up – Best Grind For Cold Brew
Undoubtedly the best grind for cold brew is a coarse grind. Deviating from this size of grind will lead to a coffee that is not as great as it could be unless you are thinking outside of the box and going old school and brewing whole bean cold brew coffee.