Step 1

Combine quinoa and the water in a medium saucepan; add salt, and bring to a boil. Reduce heat to low; cover, and simmer until quinoa is tender and has absorbed all liquid, 11 to 13 minutes. (The germ ring should be visible along the outer edge of the grain.) Transfer to a medium bowl, and cool to room temperature.

Step 2

Add vinegar, oil, cucumber, scallions, and parsley; season with salt and pepper, and toss to combine. Serve at room temperature or chilled.