Combine the peppers, cilantro, sour cream, garlic, lime juice, vinegar, honey, cumin, salt and pepper in the bowl of a food processor or a blender. If using a food processor, add olive oil in a slow stream with the motor running until the sauce is well blended and emulsified. (This will prevent the oil from settling under the blade.) If using a blender, you may add directly to the blender and then mix until creamy or drizzle the oil through the feed chute while while blending. Scrape down the sides, as needed, until the cilantro is well pureed. The dressing will be somewhat this but will thicken as it sits in the refrigerator. The flavors will also meld and improve over time.