My SCOBY sank to the bottom of the jar — is that normal or a problem?

Question

Is a sinking SCOBY a problem? Find out if a SCOBY at the bottom of the jar is normal. Learn what causes it and what it means for your brew's health.

Answer 1

A SCOBY sinking to the bottom of the jar is perfectly normal and usually indicates that it's just doing its job! It doesn't necessarily mean there's a problem with your kombucha.

Detailed Explanation:

The SCOBY, or Symbiotic Culture Of Bacteria and Yeast, is the living culture that ferments sweet tea into kombucha. Its position in the jar isn't a reliable indicator of its health or activity. Here's why a sinking SCOBY is normal:

1. Density: SCOBYs can vary in density. A denser SCOBY is more likely to sink, while a less dense one might float. This is perfectly natural.

2. Gas Buildup: Sometimes, gas bubbles can get trapped within the SCOBY, causing it to float initially. As the fermentation process continues, these bubbles are released, and the SCOBY may sink.

3. New SCOBY Formation: A new, thinner SCOBY will often form on the surface of the kombucha. The older SCOBY might sink as the new one develops.

4. Temperature Changes: Temperature fluctuations can affect the SCOBY's buoyancy. Cooler temperatures might cause it to sink.

The most important thing is to look for signs of healthy fermentation, such as a tangy smell, the formation of a new SCOBY on the surface, and the absence of mold. If your kombucha smells and tastes right, and there's no mold, a sunken SCOBY is nothing to worry about.

Pro Tip:

Don't rely solely on the SCOBY's position to determine if your kombucha is fermenting correctly. Regularly taste your kombucha to check its progress and ensure it's developing the desired tartness. If you see fuzzy mold (usually blue, green, or black), discard the entire batch.