01 - Line a baking sheet with parchment paper or a silicone baking mat.
02 - Place the semi-sweet chocolate in a heatproof bowl and melt gently over simmering water or in 30-second microwave intervals, stirring until smooth.
03 - Dip each pretzel rod about two-thirds into the melted chocolate, allowing excess to drip off.
04 - Arrange the dipped pretzels on the prepared sheet and lightly sprinkle flaky sea salt while the chocolate is wet.
05 - Melt the white chocolate using the previous method and drizzle over the chocolate-coated portion for decoration.
06 - Allow pretzels to set at room temperature for 30 minutes or refrigerate for 15 minutes until firm.
07 - Store set pretzels in an airtight container at room temperature for up to one week.