Answer

Yes, in Jain Dharma, drinking chaas (buttermilk) is generally allowed, provided it is prepared in a Jain-friendly way.

Explanation

Chaas is acceptable if:

• It is made from fresh curd.
• It does not contain root vegetables like ginger, garlic, onion, etc.
• It is consumed within the proper time according to Jain dietary discipline.
• It is not stale, fermented excessively, or kept for too long.

Some Jains avoid curd or chaas at night, during certain vows, fasting days, Paryushan, Ayambil, or other tapasya depending on their tradition and personal niyam.

Spiritual Understanding

Jain food discipline is based on ahimsa, purity, self-control, and avoiding unnecessary harm to living beings. So the main concern is freshness, ingredients, and the discipline being followed.

Takeaway

You may drink chaas if it is fresh, Jain-friendly, and allowed under your current vow or family tradition.