In Jainism, potato in any form (fresh, boiled, fried, dehydrated, flakes, powder, chips, etc.) is not allowed.

Reason:

• Potato is a root / underground vegetable (kand-mool).
• Uprooting it kills the whole plant and disturbs many tiny living beings in the soil.
• The tuber itself is considered to contain many subtle lives (anant-kay).

Once something is non-Jain by its origin, processing it (drying, dehydrating, making powder) does not make it Jain-friendly. So dehydrated potato is also not suitable for a Jain diet, in both Śvetāmbara and Digambara traditions.

If you are looking for alternatives, you can use:

• Rice, sabudana, rajgira, singhada flour, or other non-root vegetables instead of potato.

You can read more about why Jains avoid potatoes and other root vegetables here: