At tempura restaurants ... Feel free to change the ingredients as you like: use fish fillets instead of shrimp (or make a vegetarian version with sliced firm bean curd). If you can't find kabocha ...
You can whip up your own batter or buy a pre-made mix like Kikkoman's extra crispy tempura batter mix. But as with any deep frying, the tricky part is figuring out when your shrimp, sweet potatoes ...