In Jain Dharma, first priority is to control anger.

Why:

• Krodh (anger) is a kashaya that directly binds karma and hurts the soul.
• Onion is avoided in Jain diet because it is considered harmful for spiritual purity and involves more violence in food practice.
• But inner defects like anger, ego, deceit, and greed are deeper obstacles than dietary restraint alone.

So the order is:

1. Reduce anger and other passions
2. Follow pure Jain food discipline, including avoiding onion

Both are important, but self-control of the mind is the stronger first step in Jain sadhana.