Hitsumabushi (Nagoya grilled eel rice)

Order hitsumabushi in a Nagoya eel restaurant and it arrives in a round wooden tub, often with a small card explaining how to eat it. You divide the rice into quarters: eat the first plain, the second with spring onion, wasabi and nori, the third drowned in hot dashi or green tea, and the last whichever way you liked best. Nagoya cooks grill the eel until the skin is crisp, then chop it into strips. At home, ready-grilled eel fillets (unagi kabayaki, sold frozen in Japanese shops) work very well once reheated properly. Chef's tip: spoon a little of the sweet sauce through the rice before the eel goes on, so every mouthful is seasoned, not just the top layer.