Why your pour over drains slowly, and how to fix it
A V60 that stalls past four minutes is rarely the recipe. Grind, fines, agitation, paper and fresh coffee, checked in the order that finds the cause fastest.
Troubleshooting
Symptom-first diagnosis: sour, bitter, slow, leaking or dead, and what to check in what order.
Articles
Espresso troubleshooting: what the shot is telling you
Read the symptom, find the likely cause, change one thing. A working order for fixing fast, choked, sour, bitter and channelling shots without guessing.