For the Toffifee liqueur, heat condensed milk with sugar on the stove. Melt the Toffifee in it. Then remove from heat, add the egg and mix with a hand blender for about 3 minutes. Add the vodka and continue to mix.
Then pour the mixture through a sieve into a bottle. The Toffifee liqueur can be kept in the refrigerator for 2 to 3 weeks.