Cold brew, measured. Ratios, research, recipes, and gear without the guesswork.https://iheartcoldbrew.com/en-ushttps://iheartcoldbrew.com/recipes/brown-sugar-oat-shaken-cold-brew/https://iheartcoldbrew.com/recipes/brown-sugar-oat-shaken-cold-brew/Cold brew concentrate shaken over ice with brown sugar syrup and a pinch of cinnamon, then topped with oat milk. Dairy-free and made in one jar.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/recipes/cold-brew-concentrate/https://iheartcoldbrew.com/recipes/cold-brew-concentrate/Make cold brew concentrate at 1:4 coffee to water: 240 g coffee, 960 g water, a 12-hour steep. Dilute 1:2 for four glasses, or build drinks from it.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/recipes/cold-brew-float/https://iheartcoldbrew.com/recipes/cold-brew-float/Cold brew concentrate and cold water over ice, finished with two scoops of vanilla ice cream. A four-ingredient coffee float, ready in about three minutes.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/lab/cold-brew-grind-size/https://iheartcoldbrew.com/lab/cold-brew-grind-size/Coarse vs medium grind in cold brew: what it did to extraction, caffeine and taste in two studies, plus how much the bean itself changed acidity.Sun, 04 Oct 2026 00:00:00 GMTLabhttps://iheartcoldbrew.com/recipes/cold-brew-lemonade/https://iheartcoldbrew.com/recipes/cold-brew-lemonade/Cold brew concentrate over homemade sparkling lemonade: fresh lemon juice, simple syrup, sparkling water and ice. Built in a glass in about five minutes.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/lab/cold-brew-steep-time/https://iheartcoldbrew.com/lab/cold-brew-steep-time/Caffeine levels off around 6–7 hours at room temperature, but dissolved solids keep rising past 14. Two studies, re-plotted, plus what they didn't test.Sun, 04 Oct 2026 00:00:00 GMTLabhttps://iheartcoldbrew.com/recipes/cold-brew-tonic/https://iheartcoldbrew.com/recipes/cold-brew-tonic/Cold brew concentrate, tonic water and ice, built in about three minutes. 90 mL concentrate to 180 mL tonic, with an orange wheel if you have one.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/lab/cold-brew-vs-french-press/https://iheartcoldbrew.com/lab/cold-brew-vs-french-press/Same coffee, three brews: fridge cold brew, room-temperature cold brew and a French press. What changed in strength, pH, acidity and caffeine.Sun, 04 Oct 2026 00:00:00 GMTLabhttps://iheartcoldbrew.com/lab/how-long-does-cold-brew-last/https://iheartcoldbrew.com/lab/how-long-does-cold-brew-last/No study sets a safe storage limit for home cold brew. In lab storage tests, flavor went before bacteria did. What was measured, and what wasn't.Sun, 04 Oct 2026 00:00:00 GMTLabhttps://iheartcoldbrew.com/lab/is-cold-brew-less-acidic/https://iheartcoldbrew.com/lab/is-cold-brew-less-acidic/Cold brew's pH is close to hot coffee's. Its titratable acidity is lower in every coffee tested. What that difference means, from two studies.Sun, 04 Oct 2026 00:00:00 GMTLabhttps://iheartcoldbrew.com/recipes/ready-to-drink-cold-brew-jar/https://iheartcoldbrew.com/recipes/ready-to-drink-cold-brew-jar/Brew cold brew at drinking strength in a jar: 80 g coffee, 1,150 g water, 8 hours in the fridge. No dilution, ready to pour over ice.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/recipes/salted-caramel-foam-cold-brew/https://iheartcoldbrew.com/recipes/salted-caramel-foam-cold-brew/Iced cold brew topped with cold milk foam shaken with caramel sauce, finished with a caramel drizzle and a pinch of flaky salt. No frother needed.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/recipes/vanilla-cream-cold-brew/https://iheartcoldbrew.com/recipes/vanilla-cream-cold-brew/Iced cold brew topped with a pourable vanilla cream made from milk, heavy cream and syrup. Shake the cream in a jar, then float it on top.Sun, 04 Oct 2026 00:00:00 GMTRecipeshttps://iheartcoldbrew.com/recipes/vietnamese-style-cold-brew/https://iheartcoldbrew.com/recipes/vietnamese-style-cold-brew/Cold brew concentrate stirred over sweetened condensed milk and ice. A cold-brew take on Vietnamese-style iced coffee, ready in about five minutes.Sun, 04 Oct 2026 00:00:00 GMTRecipes