Tempura String Beans with Dipping Sauce

INGREDIENTS

• 5 tablespoons light soy sauce
• 1 cup ice cold seltzer water
• 6 cups cooking oil
• 2 ounces bonito flakes
• 1 1/2 tablespoons sugar
• 3 tablespoons mirin (sweet cooking wine)
• 1/2 cup all-purpose flour
• 2 cups water
• 1 pound green beans, washed and ends trimmed
• Tempura Dipping Sauce, recipe follows
• 1 1/2 tablespoons soy sauce
• 1/2 cup cake flour
• 1/2 cup rice flour
• 1 large egg
• 3 inches kombu