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TroubleshootingPractical8 min

Troubleshooting Flavor

Bad cups usually point to extraction, strength, freshness, roast fit, or water. Change one variable at a time and taste again.

1

Sour, sharp, or salty

This usually means under-extraction. Try grinding finer, using hotter water, blooming better, adding agitation, or increasing brew time.

If the coffee is a very light roast, it may need more heat and extraction than a medium roast.

2

Bitter, dry, or harsh

This usually means over-extraction or too much roast bitterness. Try grinding coarser, using cooler water, reducing agitation, or shortening contact time.

For dark roasts, cooler water and a gentler recipe often help quickly.

3

Watery or thin

Watery coffee can be too weak, under-extracted, stale, or brewed with too little coffee.

Try a tighter ratio first if the flavor is pleasant but weak. Try finer grind if it is weak and sour.

4

Muddy or silty

Muddy cups often come from too many fine particles, too much agitation, or a grinder producing uneven grounds.

Try grinding slightly coarser, pouring more gently, or using a paper filter if your brewer allows it.

5

Flat or dull

Flat coffee can come from stale beans, old ground coffee, poor water, or not enough acidity for your taste.

Use fresher coffee, grind just before brewing, and try a slightly finer grind or hotter water if the roast can handle it.

Quick reference

Sour

Grind finer, hotter water, longer brew.

Bitter

Grind coarser, cooler water, less agitation.

Watery

Use more coffee or extract more.

Muddy

Coarser grind, gentler pour, better filter.

Flat

Check freshness, water, and extraction.