Prepare the Okra: Trim the stems off the okra and remove the tough, black part of the calyx. Make a small slit in the center of each pod.
Make the Batter: Add cold water to a large bowl, sift the flour and baking powder, and mix until combined.
Dust with Flour: Lightly coat the okra with flour to help the batter stick.
Deep-Fry: Pour vegetable oil into a pan and heat it to 170°C (335°F). Dip the okra in the batter and carefully place them in the hot oil. Deep-fry for a couple of minutes until crispy. Transfer the okra to a wire rack to drain any excess oil.
Serve: Place the okra tempura on a plate and serve with a pinch of salt for dipping.
Notes
Don’t overmix the batter. Overmixing can cause gluten to form, making your tempura heavy and chewy. See 'Homemade Tempura Batter Recipe' for more tips.
If the batter is too thick, like a pancake batter, add a little water to tweak the consistency.
Dusting okra with flour helps the batter adhere better and prevents the tempura coating from coming off during frying.
After frying, keep the okra tempura upright on a cooling rack to drain excess oil rather than stacking them.