1 large English cucumber - sliced 1/16-inch-thick
2 teaspoons kosher salt
2 tablespoons minced green onions
1 tablespoon rice vinegar
1 teaspoon sweetener
1/2 teaspoon crushed red pepper
1/2 teaspoon dark sesame oil

Combine cucumber and salt, tossing well.
Let stand at room temperature 20 minutes. Drain and squeeze dry.

Combine cucumber, onions, rice vinegar, sweetener, crushed red pepper, and sesame oil.

Serve chilled or at room temperature.