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Coffee Science

6 articles · Golden ratio, brew methods, taste, cost comparisons

The coffee-to-water ratio determines extraction quality more than any other variable. This guide covers the SCA golden ratio, brew method-specific ratios (cold brew, French press), taste troubleshooting, and home brew vs store-bought costs.

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Core Coffee Ratios

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Coffee to Water Golden Ratio
Why 1:15 is the SCA standard, how extraction works, and base ratios for all brew methods.

Brew Method Specifics

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Cold Brew Coffee Ratio
Exact coffee-to-water ratio for cold brew, steeping time, and dilution tips for perfect iced coffee.
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French Press Coffee Ratio
Optimal ratio for French press, steeping time, and how to avoid gritty extraction.
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Pour Over Coffee Ratio
1:15 ratio, bloom technique, grind size — why your first cup never tastes right.

Taste Troubleshooting

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Why Coffee Tastes Bitter or Sour
Extraction mistakes that cause bitterness/sourness, and how to adjust ratio/time to fix it.

Cost Comparisons

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Home Brew vs Starbucks Cost
Per-cup cost breakdown of homemade coffee vs Starbucks, and how much you can save monthly.

☕ Coffee Ratio Calculator

Enter your brew method and cup count — get the exact coffee-to-water ratio for optimal extraction.

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