Tempura is a Japanese dish with a long history. It is commonly made with seafood or vegetables coated in a light batter made from a simple mixture of flour, egg, and water, which is then deep-fried.

You likely already have a go-to tempura dish at your favorite Japanese restaurant. It might take the form of pale shrimp tucked into a sushi roll, or of a crisp pile of vegetables waiting to be dipped ...