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Learn Coffee Brewing

Brew better coffee at home by controlling grind, ratio, temperature and time.

Free to start. Built from a single prompt. No credit card.

Brewing coffee is controlled extraction: water dissolves flavor compounds from ground beans, and the result depends on grind size, the ratio of coffee to water, water temperature and contact time. Too little extraction tastes sour and thin; too much tastes bitter and harsh. Each method, from French press and pour over to AeroPress, moka pot and espresso, balances these variables differently. Beginners improve fastest with a burr grinder, a kitchen scale and the habit of changing one variable at a time. Learnr builds a personalized coffee brewing course from one prompt and teaches the variables and methods in short lessons you can apply each morning.

How to learn Coffee Brewing, step by step

Buy fresh whole beans and a burr grinder. Look for a roast date on the bag and grind right before brewing, since ground coffee goes stale quickly. A burr grinder makes evenly sized particles, while a blade grinder mixes dust and chunks that extract unevenly.
Weigh coffee and water with a scale. A common starting ratio is 1 gram of coffee to 15 to 17 grams of water, for example 20 grams of coffee to 320 grams of water. Weighing lets you repeat a good cup and change one thing at a time.
Use water just off the boil. Water around 195 to 205°F, or about 90 to 96°C, suits most methods; letting a kettle rest briefly after boiling gets you close. Filtered water often tastes better, since chlorine and heavy minerals affect flavor.
Start with a French press. Use a coarse grind, pour all the water, steep for about four minutes, then press slowly and serve right away so the coffee stops extracting. Immersion brewing is forgiving and shows clearly how steep time changes flavor.
Learn pour over and the bloom. With a medium-fine grind, pour about twice the coffee weight in water first and wait 30 to 45 seconds while gas escapes. Then pour in slow spirals, and use total brew time to judge whether to grind finer or coarser.
Taste, diagnose and change one variable. Sour and thin usually means under-extracted, so grind finer or brew longer; bitter and dry usually means over-extracted, so go coarser. Note each change, and use short Learnr lessons on extraction to understand why it worked.

What you'll learn

Choose fresh beans and store them properly
Match grind size to each brewing method
Use a scale and ratios for consistent results
Brew with pour over, French press and AeroPress
Diagnose sour or bitter cups and adjust

What's inside your Coffee Brewing course

A sample path Learnr builds for Coffee Brewing. Your real course adapts to your goal and level.

1. Beans, roast levels and freshness
2. Grinding and grind size
3. Ratio, water and temperature
4. Immersion brewing: French press and AeroPress
5. Pour over technique
6. Espresso basics and tasting

How long does it take to learn Coffee Brewing?

Most people brew a consistently good cup with one method within one or two weeks of daily brewing. Comfort with several methods takes a month or two, and dialing in espresso can take longer because it is far more sensitive to tiny grind changes.

What you need before you start

No experience needed. A French press or pour over cone, fresh whole beans, a burr grinder, a kitchen scale and a kettle cover nearly everything. Espresso needs a dedicated machine and a grinder that can grind very fine.

Common mistakes to avoid

Brewing with coffee that was ground long ago or beans many months past roasting. Buy smaller bags and grind just before you brew.
Measuring with scoops, which vary with grind and roast. Weigh both coffee and water so each cup is repeatable.
Changing grind, ratio and temperature all at once after a bad cup, so you never learn which fix worked. Adjust one variable per brew.

How Learnr builds your course

Type your topic

Tell Learnr you want to learn Coffee Brewing, or get as specific as you like.

Get a personalized course

Learnr instantly builds a full Coffee Brewing course tailored to your goal and skill level.

Learn and level up

Move through bite-sized lessons and interactive practice, earning XP and keeping your streak.

Coffee Brewing questions, answered

Why does my coffee taste sour or bitter?

Sourness usually means under-extraction: try a finer grind, hotter water or longer brew time. Bitterness often means over-extraction: try a coarser grind or shorter brew time.

Do I need an expensive grinder?

A burr grinder makes a noticeable difference compared with blade grinders, but you do not need the most expensive model. Even, consistent grind size is the main goal.

How should I store coffee beans?

Store whole beans in an airtight container away from light, heat and moisture. Buy amounts you can use within a few weeks of the roast date for the best flavor.