If you're looking for a crispy and delicious way to enjoy hirame, try making hirame tempura. Start by preparing the hirame fillets by cutting them into bite-sized pieces. In a bowl, mix together flour, cornstarch, baking powder, and a pinch of salt. Gradually add cold water to the dry ingredients, whisking until you have a smooth batter. Heat vegetable oil in a deep pan or fryer to about 350°F (175°C). Dip the hirame pieces into the batter, allowing any excess to drip off, and carefully place them into the hot oil. Fry the hirame tempura until golden brown and crispy, about 2-3 minutes per side. Remove the tempura from the oil and drain on a paper towel-lined plate. Serve the hirame tempura with a side of tempura dipping sauce and steamed rice. This dish is a crowd-pleaser and can be enjoyed as an appetizer or main course.