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Of all the ways to prepare coffee, cold brew stands apart not just in flavor but in chemistry - and for decaf drinkers, it may be the most compelling option of all. Cold brew is not simply iced coffee. The name describes both a brewing method and the resulting drink: coarsely ground coffee steeped in cold or room-temperature water for anywhere from 12 to 24 hours, then strained and served cold. No heat is involved at any stage.

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How is cold brew different from iced coffee?

The distinction matters more than most people realize. Iced coffee is hot-brewed coffee - made through a standard drip, pour-over, or espresso process - that has been poured over ice or chilled after brewing. Cold brew never sees heat. Because hot water extracts coffee compounds faster and more aggressively than cold water, the two methods produce fundamentally different drinks despite using the same raw ingredients. Cold brew tends to taste smoother, sweeter, and less bitter. Hot extraction pulls more volatile acids and chlorogenic acids from the grounds. Cold extraction is gentler and slower, leaving those compounds largely behind.

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Concentrate vs. ready-to-drink

Most cold brew is brewed as a concentrate - typically using a 1:4 or 1:5 coffee-to-water ratio - because a long steep at that strength produces a rich, syrupy base that can be diluted before serving. Ready-to-drink cold brew is simply concentrate that has already been diluted, usually to a 1:8 ratio equivalent. At home, concentrate gives you flexibility. Dilute with water for a straightforward cold brew, with oat milk or whole milk for a creamier version, or use it undiluted as a base for coffee cocktails like an espresso martini or a cold brew negroni.

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Why does cold brew taste less acidic?

Research by Rao and Fuller (2018, Scientific Reports) found that while the pH of cold brew and hot brew coffee are broadly similar (both around 4.85-5.13), hot-brewed coffee contains significantly higher concentrations of titratable acids. In other words, hot water extracts more total acid from the grounds than cold water does, even when the resulting pH numbers look close. Titratable acidity is the better measure of how acidic a drink tastes and feels in the stomach. Cold brew’s lower titratable acid concentration explains why many people with acid reflux or GERD find it easier to tolerate - the extraction method genuinely delivers fewer irritating acid compounds, even if the pH difference is smaller than widely reported. This matters for two groups of coffee drinkers: people with sensitive stomachs who find hot coffee irritating, and anyone who simply prefers a smoother, less sharp flavor. The gentler acid profile is a property of cold extraction itself, not a side effect of decaffeination.

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Why decaf cold brew suits evenings particularly well

Decaf cold brew combines two advantages that ordinary cold brew cannot offer. First, the low-acid extraction means less stomach irritation before bed. Second, removing caffeine eliminates the primary reason most people avoid coffee after mid-afternoon. With Swiss Water® Process decaffeination, 99.9% of caffeine is removed using only water - no chemical solvents involved. The residual caffeine in a standard serving is typically 2-15mg, a fraction of what you would find even in a cup of tea. That level is unlikely to affect sleep for most people. The result is a drink you can enjoy late in the evening without trading flavor for sleep quality.

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Does cold brew have calories?

Without additions, cold brew is essentially calorie-free. Brewed coffee contains negligible carbohydrates, fat, or protein regardless of the method. The calorie count changes only when you add milk, cream, oat milk, sweetener, or syrup. A cold brew with oat milk runs roughly 60-90 calories depending on the amount used. The base drink itself contributes almost nothing to daily caloric intake.

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Which Colipse Decaf Coffee product makes the best cold brew?

The Decaf Cold Brew Grounds are the right choice here. They are ground specifically for cold brew - coarser than espresso or drip grind - which slows extraction appropriately for the 12-24 hour steep and reduces the risk of over-extraction and bitterness. The beans are decaffeinated using Swiss Water® Process, solvent-free and certified 99.9% caffeine removal, making them well suited for evening brewing without any compromise on flavor or process integrity.