When coffee tastes off, begin with the simple variables before blaming the bag or buying new equipment. Change one thing at a time so you can tell what helped.
1. Clean the brewer
Old coffee oils and scale can leave a stale, bitter, or dull finish. Clean the basket, carafe, grinder, and any removable parts according to the equipment instructions.
2. Check the water
Use fresh water that tastes good on its own. Strong odors or an unusual mineral balance can show up in the cup.
3. Match the grind to the symptom
A sharp, sour, or thin cup often points toward under-extraction. Try a slightly finer grind or a little more brew time. A bitter, harsh, or dry finish often points toward over-extraction. Try a slightly coarser grind or a little less brew time.
4. Keep the dose repeatable
Weighing coffee and water makes troubleshooting easier. For drip coffee, one part coffee to sixteen parts water is a useful starting point, not a rule you must obey.
5. Judge the finish
The finish is what remains after you swallow. If the first sip seems fine but the finish becomes rough, adjust the grind or brew time before adding more coffee.
6. Choose a different roast if needed
Sometimes the coffee is brewed correctly and still does not fit your taste. Move lighter or darker rather than forcing yourself to like it.
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