Melt chocolate according to the instructions linked in the post.Dip pretzels halfway into the chocolate and set on a baking sheet lined with parchment paper.Let harden. They'll harden at room temperature, but can be chilled to set up the process.
Melt white chocolate according to the instructions linked in the post.Dip pretzels halfway into the white chocolate and return to the baking sheet.Sprinkle with crushed candy canes.
If you have any leftover white chocolate you can drizzle it over the pretzels. I spooned mine into a frosting bag (ziploc baggie works too) and cut a TINY hole in one corner for drizzling.
Let pretzels harden.Store pretzels in an airtight container. These will stay fresh for up to two weeks.