Whisk together in a small bowl:
- ¼ cup rice vinegar
- ¼ cup sour cream
- ¼ cup buttermilk
- 2 to 3 tablespoons honey, to taste
- 1 garlic clove, minced or grated on a rasp grater
- 1 green onion, minced
- Pinch of cayenne pepper
- ½ teaspoon salt
- ¼ teaspoon black pepper
Add in a slow, steady stream, whisking constantly:
Use immediately, or refrigerate for up to 5 days.