01 - Transfer the leftover rice into a microwave-safe bowl and distribute the flaked salmon evenly over the top.
02 - Place two ice cubes on top of the rice and salmon.
03 - Loosely cover the bowl with parchment paper or a microwave-safe plate to allow gentle steaming.
04 - Microwave the bowl on high power for 2 to 3 minutes, or until the ice cubes have melted and the rice and salmon are thoroughly heated and moist.
05 - Remove the bowl from the microwave. Drizzle with soy sauce or tamari and sesame oil.
06 - Artfully layer avocado slices, cucumber, and pickled ginger over the heated rice and salmon.
07 - Sprinkle with toasted sesame seeds and scallion. Add chili flakes or sriracha to taste if desired, then serve immediately.