This is an easy and tasty way to prepare yardlong beans. Even your children might like these crispy green fries. Especially with some homemade black truffle mayonnaise!   Crispy Yardlong Beans Ingredients 1 cup tempura flour 1 cup sparkling water 1 teaspoon salt 1/2 teaspoon ground red pepper 400g yardlong beans, washed vegetable oil, for