Prepare the Batter: Mix the tempura flour with cold water as per package instructions. Remember, the batter should be cold and slightly lumpy.
Prep the Ingredients: Clean and cut all your vegetables and shrimp. Make shallow cuts in shrimp to prevent curling
Heat the Oil: Bring the oil in a deep fryer or large pot to 350°F (175°C).
Dipping and Frying: Dip each ingredient into the batter, then gently place it in the hot oil. Fry until golden, about 2-3 minutes.
Make Kakiage: Combine corn and okura with some batter. Spoon the mixture into the oil and flatten slightly to form fritters.
Drain: Place the cooked tempura and kakiage on paper towels to remove excess oil.
Make the Dipping Sauce: Combine dashi, soy sauce, mirin, and sugar in a saucepan. Bring to a simmer, then cool.
Serve: Enjoy your Tempura and Kakiage with the dipping sauce, adding grated daikon if desired.