1. Which coffee brewing method extracts the most and least caffeine?

It depends on how you measure caffeine content. Espresso has the most caffeine by concentration because it’s brewed under high pressure and served in a small volume. However, when measured by total serving size, methods like cold brew or drip coffee usually contain more caffeine overall. On the other hand, brewing methods that use cooler water or shorter extraction times generally yield the least caffeine. For example, gentler methods like pour-over can produce lower caffeine levels depending on the coffee-to-water ratio and brew time.

2. Which coffee brewing method is least acidic?

If you’re sensitive to acidity, cold brew is the coffee brewing method that’s least acidic, producing a smoother and gentler flavour that’s easier on the stomach. The slow steeping process reduces acid compounds, making it ideal for those with acid reflux or sensitive digestion. In addition, the type of coffee bean also affects acidity. By combining cold brew with low-acidity beans, you can enjoy a coffee that’s smooth, full-bodied, and easy to digest without sacrificing flavour.

3. Is brewing coffee the same as boiling?

No, brewing coffee is not the same as boiling. Brewing involves extracting flavours from ground coffee using hot (but not boiling) or cold water, while boiling coffee can over-extract and burn the grounds, leading to a harsh, bitter taste.

4. How does the brewing method affect coffee bitterness?

The brewing method directly affects coffee bitterness through temperature, extraction time, and grind size. Over-extraction, which is often caused by hot water or long brewing, increases bitterness, while balanced methods like pour-over or Nespresso ensure smoother, well-rounded flavours.

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