Seasoned Sweet Potato Vada Grilled Pita Burger What is Seasoned Sweet Potato Vada Grilled Pita Burger? Sweet Potato Vada Grilled Pita Burger is an awesomely modified version of the very famous Maharashtrian Vada pav from India.  This super delicious  burger is made with seasoned sweet potato filling, which is dipped in gram flour batter, and