In a large bowl, combine the peppermint syrup, milk, and vanilla extract. Stir until thoroughly combined.
Put the crushed candy canes in a shallow bowl. Dip the rim of each glass in the syrup mixture and then in the crushed candy canes.
Pour the syrup mixture into each glass and top with whipped cream, if desired.
Serve immediately.
Interesting Facts
Candy canes were invented in the 17th century by a German choirmaster who wanted to give his students something to keep them quiet during long church services.
The white stripes on candy canes are meant to represent the purity of Jesus.
Candy canes were traditionally only red, but in the 1950s, peppermint candy canes were invented.