Coffee calculators
Extraction Yield and Brew Ratio, Explained Properly
The two numbers that decide how your coffee tastes: extraction yield and brew ratio. How to calculate both, how they differ, and how to read your cup on a brewing control chart.
Read →Brewers · 4 minV60 Pour-Over Basics: Recipe and Pour Design
How the V60 cone shapes flavor, a standard 15g recipe, a step-by-step pour timeline, and the failures that come up most often: with the numbers to fix them.
Read →Tasting · 5 minCoffee Tasting Basics: Putting Flavor Into Words
From five quick attributes to full SCA-style evaluation across temperature stages. What to notice, in what order, and how to write it down so it is useful next time.
Read →Brewing basics · 6 minThe Complete Grind Size Guide: Settings by Brewer
Why grind size changes flavor, recommended coarseness for every brewer, and how to dial in a grinder click by click. Surface area, fines, and burr versus blade explained with numbers.
Read →Advanced · 4 minWater for Coffee: What Should You Brew With?
Coffee is over 98% water. How hardness and alkalinity change the cup, the difference between tap, filtered and bottled water, and the SCA water standard in actual numbers.
Read →Bean knowledge · 5 minStoring Coffee: The Four Things That Ruin It
Oxygen, light, moisture and heat, and what to do about each. The truth about refrigeration and freezing, and which day after roasting tastes best.
Read →Bean knowledge · 5 minRoast Levels Explained: From Light to Dark
What changes inside the bean as roasting progresses, how Agtron numbers map to color, brewing adjustments for each level, and how to work out which you actually prefer.
Read →Brewers · 5 minAeroPress Basics: Standard and Inverted Recipes
How the AeroPress combines immersion and pressure, standard and inverted methods, a baseline recipe, and the failures worth knowing about.
Read →Brewers · 4 minFrench Press Basics: Full Body From Immersion
What a metal filter leaves in the cup, the four-minute rule and what comes after it, how to reduce sediment, and why grinder quality shows up here more than anywhere.
Read →Brewers · 5 minCold Brew Basics: Coffee Steeped in Cold Water
Why cold brew tastes less acidic, immersion versus slow drip, concentrate ratios and dilution, and how long it actually keeps.
Read →Brewers · 5 minEspresso Basics: Dose, Grind and Ratio
How nine bar of pressure changes extraction, describing a shot in three numbers, ristretto through lungo, using time to dial in, and diagnosing channeling.
Read →Brewers · 4 minMoka Pot Basics: Brewing With Steam Pressure
How steam pressure drives a moka pot, why you should start with hot water, avoiding the burnt taste, and sizing the dose to the basket.
Read →Brewers · 4 minKalita Wave Basics: Stability From a Flat Bed
How the flat bottom and three small holes even out extraction, a standard recipe, pouring technique, and how the Wave compares with a V60.
Read →Brewers · 4 minChemex Basics: What the Thick Filter Does
Why Chemex filters are so thick, how that shapes the cup, a standard recipe, and what to do when the water refuses to drain.
Read →Brewers · 4 minClever Dripper Basics: Immersion Meets Filtration
How the valve changes the brew, why immersion is so forgiving, a standard recipe, and using steep time as your main flavor control.
Read →Brewing basics · 4 minThe Coffee Bloom: Why Wait Thirty Seconds?
Why fresh grounds swell, how trapped carbon dioxide blocks extraction, adjusting bloom time to roast date, and the mistakes that undo the whole brew.
Read →Brewing basics · 5 minWater Temperature for Coffee: What Is the Right Number?
How temperature changes extraction speed and flavor, recommended ranges by roast level, hitting a target without a thermometer, and the heat you lose during the brew.
Read →Advanced · 5 minTDS and Refractometers: Measuring Coffee Strength
What TDS actually measures, how to read it accurately, how to turn it into an extraction yield, and the measurement errors that trip people up: plus how to start without a refractometer.
Read →Bean knowledge · 4 minCoffee Processing: Washed, Natural and Honey
How the three main processing methods shape flavor, what the honey colors mean, experimental fermentation, and choosing coffee by process.
Read →Tasting · 4 minDescribing Coffee Flavor and Reading the Flavor Wheel
How the flavor wheel is structured and how to work inward to outward, why aroma is not taste, training your vocabulary, and typical notes by origin.
Read →Bean knowledge · 5 minSingle Origin or Blend: Which and When
What each term actually covers, where each works best, how blends are constructed, and how to judge whether one is any good.
Read →Bean knowledge · 4 minDecaf Coffee: How the Caffeine Comes Out
The four decaffeination processes and what separates them, why decaf beans behave differently, and the brewing adjustments that make them taste good.
Read →Advanced · 7 minSour or Bitter Coffee: A Diagnostic Guide
Why your coffee tastes sour, bitter or watery, and how to narrow it down. Splitting problems into yield and strength, a symptom-cause-fix matrix, and how far to move each variable.
Read →Brewing basics · 6 minPour-over pouring: pulse pours vs. continuous pours
Same coffee, same grind, different cup: how you pour changes the taste. The difference between pulse and continuous pouring, kettle height and flow rate, fixes by symptom, and two example recipes.
Read →Advanced · 5 minHow to brew iced pour-over (flash-chilled coffee)
Brewing straight onto ice locks in aroma. How flash-chilled iced coffee works, how to split water and ice, grind and temperature adjustments, how it differs from cold brew, and fixes for common problems.
Read →