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If your home coffee tastes weak, bitter, or just inconsistent, the culprit usually isn’t your beans or your brewer — it’s the ratio. Getting the coffee-to-water balance right is the fastest way to a better cup, and it takes one number to remember.
The Golden Ratio
A great starting point is 1:16 — one gram of coffee for every 16 grams (millilitres) of water. That’s roughly 22g of coffee to 350ml of water for a large mug. It lands squarely in the range specialty roasters recommend and works for almost every brew method.
Adjust to Your Taste
- Coffee too weak or sour? Use more coffee — try 1:15 or 1:14.
- Coffee too strong or bitter? Use less coffee — try 1:17 or 1:18.
Change one variable at a time and you’ll dial in your perfect cup within a few brews.
Why You Should Weigh, Not Scoop
Scoops are wildly inconsistent — a “tablespoon” of light-roast beans weighs differently than dark roast, and bean size varies. A small kitchen scale removes the guesswork and makes every cup repeatable. It’s the cheapest upgrade with the biggest payoff in consistency.
Quick Reference
- 1 mug (~350ml): 22g coffee
- 2 mugs (~700ml): 44g coffee
- Full French press (~1L): 60-62g coffee
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[Recommend a coffee scale (ideally with a timer) here — a photo and a Check Price button to your affiliate product.]
Don’t Forget the Other Variables
Ratio is the biggest lever, but grind size, water temperature (195-205°F / 90-96°C), and freshness all matter too. Nail the ratio first, then fine-tune from there.