Answer

In Jain Dharma, drying a root does not change its basic nature.

So:

• Garlic powder is still not allowed, because garlic is an underground root vegetable.
• Dry ginger powder is accepted by some Jain households as a spice, but this practice can vary by family, sect, and level of strictness.

Explanation

The main Jain principle is ahimsa — avoiding harm to living beings.

Underground vegetables like:

• garlic
• onion
• potato
• carrot
• ginger

are generally avoided because:

• they grow beneath the soil,
• pulling them out harms the plant and soil life,
• they are considered to contain more living beings,
• they can also encourage heavier, more passionate food habits.

Even if garlic is made into powder, it is still garlic. Drying or grinding does not make a prohibited root acceptable.

Spiritual Understanding

Jain food rules are not only about taste or form. They are about care, restraint, and non-violence.

That is why Jainism looks at:

• where the food comes from
• how much harm is caused in obtaining it
• whether it supports purity and simplicity

So the outer form may change, but the ethical nature of the food remains important.

Takeaway

If something is prohibited in Jain tradition because it is a root, then powder form does not make it allowed.

• Garlic powder: generally not allowed
• Dry ginger powder: sometimes used by some Jains, but not universally

In strict observance, it is always safest to follow the guidance of your own Jain tradition and family practice.