Short answer: No.

Explanation:

• Tapioca (sabudana) comes from cassava, which is a root/tuber. In Jain maryada, root vegetables are avoided because they involve higher himsa (many living beings in the root).
• Therefore, during stricter periods—such as Paryushan, Ayambil, Upvas, or when observing ashoch/sutak (birth/death impurity)—tapioca is not permitted.
• This applies in both Shwetambar and Digambar traditions. Some households use sabudana during fasts due to regional habits, but that is not according to traditional Jain discipline.
• If your local Sangh/Acharya has a specific maryada, follow that guidance.