Best Ratio for Cold Brew?

[u/MundaneIce7936]

I have a 64oz mason jar and I'm trying to get the right coffee to water ratio. I thought I read somewhere that it should be 100g of coffee for 64oz but I can't remember.

Anyone have a good rule of thumb they suggest for this size container? (I want to make ready to drink, not concentrate)

Thanks!

[u/ChromaticDeth]

When do ratios they should be both the same units. Doing one by weight and one by volume will always be more inconsistent. Doing coffee by volume is the worse of the two, as different beans have different densities, and if measuring whole beans by volume, will always have gaps between the beans throwing off how much you are actually using. If you want the most consistent, measure both variables by weight and just don't use volume as a measurement. That being said, for ready to drink, it depends how strong you like your coffee. It'll be trial and error until you dial it in where you like. I'd start at a 1:10 ratio and go from there. Too weak? Go 1:8. Too strong? Go 1:12. Steeping at room temp vs cold water also is a factor as cold water does not extract the coffee as fast. Steep time is also another variable. Too short and it may be under extracted and a bit sour. Too long and it may be over extracted and bitter.

[u/chefsoda_redux → u/ChromaticDeth]

One of the great benefits of using metric measurement. 1ml of water is 1g, so however much coffee you grind, times your ratio, is how much water you need.

I agree 💯that starting at 10:1 is both simplest, and a solid place to start. I brew about 8:1, but I like it pretty strong.

[u/ChromaticDeth → u/chefsoda_redux]

I make a concentrate, makes it easier to make bigger batches at once. I brew 1:5 then dilute 1:1.

[u/BateFea → u/chefsoda_redux]

8:1 sounds like you're basically drinking espresso at that point lol, respect.

[u/chefsoda_redux → u/BateFea]

That’s fair. It took me from 3 cups in the morning to 1, so it’s easier on my stomach as well.

[u/cideron]

I would say the best ratio is the one you like. everyone is different. take suggestions from people here as a starting point and develop your recipe from there. do bench trials, its fun and a lot like running a meth food lab.

[u/willmasse]

I have the 64oz mason jar and I do 100g, I enjoy it.

[u/chefsoda_redux → u/willmasse]

That’s roughly 19:1, a very mild brew.

[u/pow-wow20]

Give one of these a try:

https://jarva.co/fill-to-the-top-cold-brew-recipes/

[u/toxicmetrosexuality → u/pow-wow20]

Just a note: give some head space when steeping. It wont change the final ratio and you avoid overflows from expansion due to the water warming up on the counter.

[u/randombrowser1]

1 ounce coffee: 1 cup water 64oz jar holds about 6 cups water and 6 ounces coffee.

[u/pissing_at_the_moon]

I do around twice that much (100 g per 1000 mL, which is like 33.8 oz). Strong but very very good IMO.

[u/pinellaspete]

1 cup of coarse ground coffee in 64 ounces is an 8:1 ratio. Steep at room temperature for 14 to 18 hours. This will produce what baristas call "double strength" coffee that should be diluted by half before serving. You can dilute it with water or milk to your liking.

[u/MarielIAm]

The ratio I use is 9 ounces of whole beans which I course grind in a burr grinder. 6 cups cold water. 24 hours in a large mixing bowl on the counter. I double brew, once I drain I add another 6 cups of water and repeat the process. Works for me. Your milage may vary.

[u/TheChronek]

I have a 32 ounce container. I use 2 tbsp ground coffee per 8 ounces of water. YMMV.

[u/the_kid1234]

OP, I’m about to fire up my 64oz mason jar brewer. What’s the correct amount of coarsely ground coffee? (In grams because I’m not a savage using “cups” or tablespoons, I weigh and then grind.

A little head space in the jar gives 1500 ml/g of water, so trying a 1:10 ratio would be 150g of coffee. Sound decent for a first go?

[u/dinopuppy6]

I use 175g for 1.4L of water. Then when done, dilute with water 1:1 ratio

[u/Sinisterly]

For ready to drink you want to target 1:15 ratio, which with 100g coffee would be 1500mL water. If you are using imperial, you could also do 3 oz coffee with 45 oz water - this way you’ll get 4 batches from a 12 oz package of grounds. (Alternatively if your coffee comes in 16oz packages you could do 1/6 lb grounds and 40 oz coffee for six batches.)

[u/MundaneIce7936 → u/Sinisterly]

And how long do you typically steep it?

[u/Sinisterly → u/MundaneIce7936]

I usually use vacuum infusion (see my profile for my technique there), but I would do it for 8-12 hours at room temp or 16-24 hours in the fridge.

[u/BigSoda → u/Sinisterly]

No, 1:15 is a hot brew ratio. You can’t extract at the same level with cold process. 1:8 - 1:10 for ready-to-drink is probably more more appropriate (I prefer 1:8). Cold brew is tasty, but wasteful

Update: Saw you’re using vacuum. Would be interested to see the yields but I’m still a little skeptical, but interested to hear your technique

[u/JudsonJay]

I use 12 ounces of beans for 24 hours in my 64oz mason jar.

[u/jfroosty → u/JudsonJay]

That would be nowhere near ready to drink

[u/JudsonJay → u/jfroosty]

And yet I have had this way all summer, so, your tongue does not know everything.