Peanuts (groundnuts) are usually considered permissible for many Jains, but practices vary by community and time.

• Why many Jains eat them: A peanut is a seed (a legume), not a root or tuber. Jains distinguish root vegetables (which are avoided because uprooting harms many life-forms) from seeds/ fruits, so peanuts are often allowed in regular meals. Some families still choose to avoid them as a precaution or out of personal vow. You can read more about the general view here .

• During sacred periods (like Paryushan/Das Lakshan): Many Jains avoid underground foods, including peanuts, to minimize harm and rapid growth of tiny life-forms. If your sangh follows stricter maryādā, you should refrain; otherwise, peanuts may be allowed with careful preparation. See the guidance here and here .

• How to eat them if you do: Prefer plain, dry-roasted peanuts, check they are insect-free, and avoid sprouts or processed peanut products that might carry more contamination or moisture. If you follow a stricter vow, avoid them altogether.

• Alternatives during stricter periods: Tree nuts like almonds, cashews, walnuts, or other simple, unprocessed vegetarian items are commonly recommended when peanuts are avoided. See examples here .

In short: peanuts are generally allowed for many Jains, but during Paryushan and in some family or guru-guided maryādā they are avoided. Always follow your local sangh’s guidance.