1/2 pound ahi or sushi fish of your preference, cut into 1/2-inch cubes
1/4 mild onion thinly sliced (If your onions are specially hot, give them a quick soak in cold water and drain beforehand.)
1 Tablespoon chopped gari (pickled sushi ginger), or if you don't have that on hand, a teaspoon of minced fresh ginger
1/2-1 Tablespoon chili garlic paste or sriracha or sambal oelek
1/2-3/4 Tablespoon soy sauce
2 teaspoons toasted sesame oil
1-2 teaspoons fresh lemon or lime juice
pinch sugar
2-3 Tablespoons chopped cilantro (I use the stems, too.)
furikake (fooreeKAHkeh) to sprinkle on top