For people who love cold brew. Recipes, ratios and research for making it at home, from your first jar to your fiftieth.
800 600 400 200 1 2 3 4 Plate 1. A 1:4 jar, hour seven of twelve. Start a batch tonight 1:4 concentrate in a 1.5 L jar or pitcher. Mix it tonight and strain it tomorrow, about 15 minutes of work in all.
1
Weigh 240 g of coffee, ground coarse.
think coarse sea salt
2
Stir Pour in 960 g of water and stir until every ground is wet.
there’s your 1:4
3
Steep Lid on, 12 hours on the counter. The fridge takes longer.
you sleep, it steeps
4
Strain Fine mesh, then a paper filter. Let it drip and leave the grounds be.
finish it within a week
5
Pour 1 part concentrate to 2 parts cold water or milk, over ice.
go 1:3 for a lighter cup
The full concentrate recipe Scale it up for a crowd
What the studies say Five questions home brewers ask, answered from published papers, including what the papers didn’t test.
Seventeen more hours, a little more caffeine
900 1,000 1,100 1,200 1,300 Medium roast, medium grind Medium roast, medium grind, 6.7 h (400 min): 1,060 mg/L Medium roast, medium grind, 24 h (1440 min): 1,180 mg/L 1,060 1,180 Medium roast, coarse grind Medium roast, coarse grind, 6.7 h (400 min): 1,130 mg/L Medium roast, coarse grind, 24 h (1440 min): 1,230 mg/L 1,130 1,230 Dark roast, medium grind Dark roast, medium grind, 6.7 h (400 min): 970 mg/L Dark roast, medium grind, 24 h (1440 min): 1,080 mg/L 970 1,080 Dark roast, coarse grind Dark roast, coarse grind, 6.7 h (400 min): 930 mg/L Dark roast, coarse grind, 24 h (1440 min): 990 mg/L 930 990 Caffeine, mg/L 900 1,000 1,100 1,200 1,300 Medium roast, medium grind Medium roast, medium grind, 6.7 h (400 min): 1,060 mg/L Medium roast, medium grind, 24 h (1440 min): 1,180 mg/L 1,060 1,180 Medium roast, coarse grind Medium roast, coarse grind, 6.7 h (400 min): 1,130 mg/L Medium roast, coarse grind, 24 h (1440 min): 1,230 mg/L 1,130 1,230 Dark roast, medium grind Dark roast, medium grind, 6.7 h (400 min): 970 mg/L Dark roast, medium grind, 24 h (1440 min): 1,080 mg/L 970 1,080 Dark roast, coarse grind Dark roast, coarse grind, 6.7 h (400 min): 930 mg/L Dark roast, coarse grind, 24 h (1440 min): 990 mg/L 930 990 Caffeine, mg/L see the numbers Caffeine in cold brew after 400 minutes and after 24 hours, four Kona coffees, room temperature. Fuller & Rao 2017, Table 2. Coffee 6.7 h (400 min) (mg/L) 24 h (1440 min) (mg/L) Medium roast, medium grind 1,060 1,180 Medium roast, coarse grind 1,130 1,230 Dark roast, medium grind 970 1,080 Dark roast, coarse grind 930 990
A short shopping list Research roundups from manufacturer specs. Sort all 11 makers side by side in the spec database .
a big jar coarse coffee a scale one night Those four cover a first batch. The rest is upgrades. See the starter kit Seven drinks, one jar Brew the concentrate once and every drink here is 3 to 8 minutes away.
All drinks and bases Newsletter · Free cheat sheet
Ratios for the fridge door A one-page PDF with the ratios, a batch table from one glass to a gallon, and the OXO, Toddy, Filtron and Hario recipes. Then three short emails, and a note when something’s new.
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