Turmeric (haldi) is generally not allowed in a Jain meal because it is root-derived and Jains avoid kand-mool (underground vegetables) in ordinary meals and especially during holy periods. Both Digambar and Shwetambar traditions emphasize ahimsa and typically restrict root vegetables like turmeric, though local practices can vary slightly by guru or region. You can read a concise Jain-guidance overview here .