1. Place raisins in small bowl. Toast coriander and cumin in small skillet over medium heat until fragrant, 2 to 3 minutes. Transfer spices to bowl with raisins. Wipe out skillet; add carrot juice to skillet and simmer over medium heat until reduced to 1/4 cup, about 6 minutes. Pour carrot juice over raisins; cool to room temperature.

2. Process carrot juice/raisin mixture, vinegar, cilantro, yogurt, honey, pepper flakes, and salt in blender until thoroughly combined. With machine running, gradually add oil, scraping down jar as needed. (Can be refrigerated up to 1 week.)

Makes about 1 cup