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Brewing

A brew comparison needs one stable recipe and one deliberate change.

In practice

Keep coffee mass and water mass visible. If you change grind or contact time as well as the ratio, the next cup cannot tell you which change explains the difference.

Use the ratio calculation to record your recipe, then compare taste under similar conditions.

Brewing guides

  1. A hand pours water into a paper-lined coffee dripper and glass server on a scale beside a bowl of beans.Brew Filter Coffee With Better RatiosWeigh your recipe before changing the brew.
  2. A hand places a drop of cooled coffee into a refractometer sample well beside the collected brew.Measure Coffee Strength Before Changing RecipesMeasure the cup before changing the recipe.
  3. Clear water is added to black coffee on a scale, with an unchanged coffee alongside for comparison.Dilute Strong Coffee Without Losing TrackAdd measured water with the result visible.
  4. Dry coffee, clean brewing water, collected coffee and wet filter grounds are shown as separate quantities.Coffee Strength and Extraction Yield ExplainedTell the recipe from the measured drink.

Brew ratios

Calculate brew water

288 g water at a 1:16 mass ratio.

A ratio describes your chosen recipe; it does not guarantee extraction, taste or a caffeine amount.

Convert water temperature

68 °F

Convert a recorded reading between units. The result does not choose a brewing or drinking temperature.