01 - Line a baking sheet with parchment paper to prevent sticking.
02 - Melt the dark chocolate in a heatproof bowl set over a pot of gently simmering water, stirring until smooth. Alternatively, microwave in 20-second bursts, stirring between each interval.
03 - Hold a pretzel rod over the bowl and spoon melted chocolate over two-thirds of its length, allowing excess to drip back into the bowl.
04 - Place each coated pretzel rod onto the prepared baking sheet. Repeat with remaining pretzels.
05 - While chocolate remains wet, sprinkle each pretzel with a pinch of flaky sea salt.
06 - For decoration, melt milk or white chocolate and drizzle over the dipped pretzels.
07 - Allow pretzels to set at room temperature for 20–30 minutes, or refrigerate for 10 minutes until chocolate is firm.
08 - Store in an airtight container at room temperature for up to 1 week.