Daikokuya is a long-running, reservations-only tempura restaurant located near the estuary where the Kanda River meets the Sumida River. Even at lunchtime, you can enjoy the made-to-order tempura bowl (from ¥3,000) at the counter, which provides nice views of the chef preparing your meal.
In addition to the jumbo prawns, the meal also includes the crunchy kakiage, made of prawns, clams and lotus root, as well as seasonal vegetables such as broccoli (winter) and wild herbs (spring). The rich, savoury sauce also enhances the flavour.