Why does coriander paste ferment faster in clay jars?

Question

Curious why your coriander paste might ferment quickly in a clay jar? We explore how the porous nature of clay can affect its storage life.

Answer 1

Coriander paste ferments faster in clay jars due to the porous nature of clay, which allows for better air circulation and moisture absorption, creating an environment conducive to microbial growth and fermentation.

Detailed Explanation:

Clay jars are made of porous material, meaning they have tiny holes that allow air and moisture to pass through. This is in contrast to glass or plastic containers, which are non-porous. When coriander paste is stored in a clay jar, the following factors contribute to faster fermentation:

1. Air Circulation: The porosity of clay allows for better air circulation around the coriander paste. This increased oxygen availability promotes the growth of aerobic microorganisms, including yeasts and bacteria, which are responsible for fermentation.

2. Moisture Absorption: Clay absorbs moisture from the coriander paste. This reduces the water activity within the paste, concentrating the available nutrients and making it a more favorable environment for microbial growth. The absorbed moisture also creates a humid environment around the jar, further encouraging microbial activity.

3. Temperature Regulation: Clay jars can help regulate temperature to some extent. While they don't actively cool or heat, they can buffer temperature fluctuations, providing a more stable environment for microbial activity compared to containers that heat up or cool down rapidly.

4. Natural Microflora: Clay itself can harbor natural microflora. While not always the case, some clay may contain microorganisms that contribute to the fermentation process.

These factors combined create an environment where microorganisms thrive, leading to faster fermentation of the coriander paste.

Pro Tip:

To slow down fermentation in clay jars, consider adding a natural preservative like salt or lemon juice to the coriander paste. These ingredients inhibit microbial growth and extend the shelf life of the paste.