Add cucumber, white onion, green onion, and garlic to the dressing. Toss and enjoy immediately or let marinate in the refrigerator overnight for a bolder flavor.
Note
For a less spicy version, use 1 tablespoon of paprika in place of cayenne pepper-paprika mix.
If Korean Red Chili Powder is available, 1 tablespoon of that can be used in place of cayenne pepper and paprika.