Melt 4 ounces dulcey white chocolate (either in a double boiler or in a heatproof bowl in the microwave in 30 second increments), then stir in 1 tablespoon yogurt powder. Send a few pretzels swimming in the chocolate so that they get fully coated, fish them out with a fork, letting excess chocolate drip off, and place on the wire rack. According to Molly, it's totally okay if some of the pretzels overlap because then they stick together and those are the best ones. Sprinkle immediately with nonpareil sprinkles as desired and allow to harden at room temperature or in the fridge. Store in an airtight container in the fridge for up to 1 week.