In Jainism, dietary practices are guided by the principle of ahimsa (non-violence), which extends to minimizing harm to all living beings, including microorganisms. The consumption of curd (yogurt) is a topic of careful consideration in Jain dietary rules.

Key Points about Curd in Jainism:

1. Fermentation and Life Forms:

Curd is made by fermenting milk with bacteria. According to Jain beliefs, fermented foods contain a high number of living microorganisms. Consuming such foods is considered to involve greater himsa (violence) because it results in the destruction of many living beings.

1. Traditional Restrictions:

Many devout Jains, especially monks and nuns, avoid curd and other fermented foods completely. Lay Jains may also avoid curd on certain days or during particular periods, such as Paryushana or on fasting days.

1. Timing and Freshness:

If curd is to be consumed, it is recommended to prepare it fresh and consume it within a limited time (usually before sunset and not more than a few hours after preparation) to minimize microbial multiplication.

1. Alternatives:

Some Jains use chaas (buttermilk), which is considered lighter and less fermented than curd, and is often preferred over curd.

Summary: Curd is generally avoided or restricted in Jainism due to the principle of non-violence and the belief that fermented foods contain many living beings. If consumed, it should be fresh and not kept overnight.

References:

• "The Jain Path: Ancient Wisdom for the West" by Shravika S. Jain
• "Jainism: The World of Conquerors" by Natubhai Shah
• Jain dietary guidelines from various Jain organizations