01 - Line a baking sheet with parchment paper or a silicone baking mat.
02 - Place 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 approximately two-thirds into the melted chocolate, allowing excess to drip off.
04 - Arrange dipped pretzels on the prepared sheet and sprinkle lightly with flaky sea salt while chocolate is still wet.
05 - Melt white chocolate by the same method and drizzle over the chocolate-coated portion for decoration.
06 - Let pretzels set at room temperature for 30 minutes or refrigerate for 15 minutes until chocolate firms.
07 - Keep pretzels in an airtight container at room temperature for up to one week.