I always start by mixing olive oil, sesame oil, soy sauce, white miso, lemon juice, and brown sugar in a small bowl. Whisk until smooth and set aside so the flavors can meld while I prep the other ingredients.
Using a very sharp knife, I slice the salmon against the grain into thin, delicate pieces. This keeps the texture silky and ensures each bite melts in your mouth.
I layer the salmon slices in my serving bowl, slightly overlapping them. Then I add cucumber, red onion, sesame seeds, and chives. A drizzle of the miso dressing ties everything together.
I sprinkle capers on top, season lightly with flaky salt and black pepper, and serve immediately. For a heartier meal, I place the salmon mixture over a bed of sushi rice.