Dry the surface of 200 g salmon fillets with kitchen paper and rub ½ tsp salt over both sides. Cover and rest at room temperature for 20 minutes (less if the environment is hot).
5 minutes before the resting time is over, Preheat the grill or broiler on a medium-high setting. When the salmon has finished resting, pat the salmon dry once more and rub 1 tsp sake over the flesh side.Place the salmon on a wire rack with the skin-side facing the heat source.
Grill for 3-4 minutes or until the skin is golden and crispy, then turn down the heat to medium and flip the salmon over. Grill the other side for 3-4 minutes or until the flesh is pale and opaque, indicating that it's cooked through.
Remove the salmon from the grill and peel off the skin.
Cut the crispy skin into thin slices.
Place the salmon flesh in a container and break it into flakes. Check for bones and if found, use chopsticks or tweezers to remove them.
Heat 300 ml dashi stock to approximately 80 °C (176 °F) and then add 1 green tea bag. Brew for 1-2 minutes or increase the time if you prefer a more intense tea flavor.
Remove the tea bag and add 2 tsp Japanese soy sauce (koikuchi shoyu).
Divide 2 ptns cooked Japanese short-grain rice into serving bowls and sprinkle the top with ground sesame seeds.
Distribute the salmon flakes and salmon skin on top of the rice, then sprinkle with finely chopped green onions.
Pour the dashi tea just before serving and sprinkle with kizami nori (shredded nori) and a small blob of wasabi paste (optional). Enjoy!
Notes
To enjoy ochazuke chilled in the summer, simply chill the dashi/tea in the refrigerator before assembling.
More topping options: Mitsuba leaves, Shredded shiso leaves, Arare (tiny rice crackers), Umeboshi (pitted, chopped), Yuzu zest, Sudachi juice or wedges, Shichimi togarashi, Ikura (salmon roe).