Smoked Salmon with chive

1 cucumber , peeled seeded and cut into 2-inch julienne strips 1/4 cup seasoned rice vinegar 1/2 teaspoon sesame oil 2 teaspoons fresh ginger , finely grated,[...]

4 1/2 tablespoons all-purpose flour 2 teaspoons sugar 1/2 teaspoon kosher salt 1 chilled large egg white 4 tablespoons unsalted butter , at room temperature 1[...]