Homemade tempura batter is delightfully simple and requires just three ingredients, making it a convenient option for a quick meal or snack. To create the perfect light and crispy coating, you'll need plain flour, cold sparkling water, and a pinch of salt. The sparkling water introduces air into the batter, resulting in a wonderfully airy texture when fried. Begin by mixing the flour and salt together, then gradually whisk in the cold sparkling water until you achieve a smooth consistency. It's important to keep the batter cold to ensure the best results. This easy recipe not only enhances a variety of vegetables or seafood but also brings an authentic taste of Japan to your kitchen. Enjoy your delicious tempura with a side of dipping sauce for a real treat!