How to dial in your French press
French press produces a rich, full-bodied cup — but it's easy to end up with something muddy, bitter, or flat. Here's how to read your brew and fix it.
Common French press problems and fixes
Bitter or harsh
Over-extracted. Grind coarser so water moves through the grounds less aggressively. Also make sure you're not over-steeping — 4 minutes is a good starting point.
Muddy, heavy, or sludgy
Too much coffee relative to water, or the grind is too fine. Reduce your dose or grind coarser. French press needs a coarser grind than most methods to avoid over-extraction and excess sediment.
Watery or weak
Not enough coffee. Increase your dose — a good starting ratio is 60–70g of coffee per litre of water. If body is still low after adjusting dose, try a slightly finer grind.
Sour or sharp
Under-extracted. Grind finer or steep a little longer. French press is forgiving enough that a slightly longer steep (try 4:30–5:00) can improve extraction without making it bitter.
Dry or astringent
Over-extraction signal. Grind coarser. This is one of the clearest signs you've pushed extraction too far — fix the grind before adjusting anything else.
French press basics
French press is an immersion brew — the coffee sits in contact with water for the full steep time. This means grind size controls how quickly extraction happens, and steep time controls how long it continues.
A good baseline: 30g of coffee, 500ml of water at 93°C, 4 minutes steep time. Plunge slowly and pour immediately. Leaving it sitting after plunging continues the extraction and makes it more bitter.
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