Answer

In Jain Dharma, onion is generally not allowed, while dry ginger may be allowed in some traditions as a spice. But importantly, this is not a universal rule in every Jain household—some stricter Jains avoid even dry ginger because it still comes from an underground part of the plant.

Explanation

The main Jain principle here is ahimsa — avoiding harm as far as possible.

• Onion is a root/bulb vegetable. Harvesting it uproots the whole plant and causes more harm.
• It is also considered heavy and stimulating in traditional Jain food discipline.
• Dry ginger is usually used in very small quantity as a spice.
• In some communities, it is accepted because it is not eaten as a main vegetable and is used for digestion.

So the difference is often based on traditional usage and degree of harm, not because dry ginger is completely free from concern.

Spiritual Understanding

Jain food rules are meant to reduce violence, attachment, and inner agitation.

• Foods that grow underground are generally avoided because they involve greater injury.
• Onion is strongly avoided for this reason.
• Dry ginger, when accepted, is usually treated as a minor spice rather than a staple food.

Still, from a strict Jain viewpoint, the safest path is to follow the guidance of your family tradition, guru, or sampraday.

Takeaway

• Onion: generally not allowed in Jain diet.
• Dry ginger: sometimes allowed as a spice, but not in all Jain traditions.
• If you want the strictest observance, it is better to avoid both unless your tradition specifically permits dry ginger.