Put sugar on a saucer and moisten the edges of five or six glasses with water. Dip them upside down in sugar and let them dry.
For the marshmallow stars, cut marshmallows into 3-4 slices with oiled kitchen scissors and powder with starch. Cut out ministers (1-2 cm each) or other motifs.
Break white chocolate into pieces. Heat milk. Add chocolate. Remove from heat. Melt chocolate while stirring. Foam with a hand blender. Pour into the glasses and serve with candy canes, marshmallow stars and the rest of the marshmallow slices.