There are several types of vadas. Popular one is batata wada meaning potato vada, which is famous for vada pao. another one is fried pakoda which is called as vada in certain regions of India.

try buttermilk then, masala chhas it is called at many places. Many people who have dairy allergy can still digest buttermilk.

They take the concept of non violence to another extent, so they dont eat anything that would kill the plant, which means all the roots.