What Samagri are essential for Tarpan at Prayagraj Sangam?

The core materials are:

• Water (directly from the Sangam confluence)
• Black Sesame Seeds (Kala Til)
•  Barley (Jau)
•  Kusha Grass (Darbha)
•  A vessel (Lota), usually copper or brass.
• Optionally: Flowers (white preferred), rice (Akshat).
• Samagri is readily available at the ghats or arranged by the guiding priest