Troubleshooting the press
Sour, bitter, muddy, weak — each has one fix — 5 min
Taste first, then turn exactly one dial. Sour, sharp, thin at the finish — the water left too soon: grind one step finer, or steep a minute longer, or brew a few degrees hotter. Pick one. Bitter, drying, ashy — the water took too much: grind coarser, steep shorter, or cool the kettle. Again, one.
The two impostors: weak-but-balanced is not an extraction problem at all — it wants more coffee, not more time. And muddy is a fines problem — grind coarser, press gently, pour slowly, and stop decanting before the sludge.
Interactive
Find your last cup on the curve — the label is the fix.
Try it in the Blend app
Hold the discipline: one change per brew, and a one-line note in your journal each time — Blend keeps the log for exactly this reason. Change three things at once and a better cup teaches you nothing.
After five deliberate brews, notice what has happened: dose, grind, temperature, time, agitation — you have now turned every dial from Chapter 1 on real coffee and tasted the answer. That is the entire method, and it travels. The cones and drippers ahead are the same five variables wearing different clothes.
Note
Why 'weak' is not 'under-extracted': strength is how concentrated the cup is; extraction is how much each ground gave up. A 1:20 brew can be perfectly extracted yet watery — its grounds gave generously into too much water. Fixing it with a longer steep adds bitterness to thinness. More coffee fixes it in one move. Keeping these two ideas separate is half of all coffee troubleshooting.
Brew it with a guided timer.
Blend counts the pour, times every step, and saves what you change. Free on iOS and Android.