Diagnostic Tool

Fermentation Troubleshooter

Select the symptoms you're seeing in your ferment. Get a diagnosis, severity rating, fix, and prevention plan — backed by microbiology, not guesswork.

Visual

Smell

Texture

Activity

Diagnosis

Select symptoms

Pick what you're seeing, smelling, or noticing. We'll tell you what it means.

Chemist's note

When in doubt, trust your nose over your eyes. Many visual symptoms (cloudiness, color changes) are harmless. But a truly rotten smell is never safe. If it smells like something died — it did. Throw it out.