Add tamarind pulp and 1 cup granulated sugar to a bowl and mash together with a spoon or fork. Take small amounts of the tamarind and sugar mix and shape them into small balls by rolling them in your hands. Make them the size of a marble or slightly bigger, as you like. Add the remaining sugar to a flat surface, like a plate or a sheet pan. Roll the tamarind balls in granulated sugar until they're well-coated. You can eat the tamarind balls immediately, or you can let them set for a few hours or overnight. Allowing them to set will give them a firmer texture and more crystallized sugar coating. Enjoy.