To start wash the lemons well, remove the lemon peels be careful to remove as little white as possible.
In a large jar add the vodka and the lemon peel, place in a dark closet or room for 10-15 days. Once or twice a day swirl the liquid in the jar.
Remove the peel from the jar and place the liquid back in the jar.
In a medium saucepan add the peel with the cream and milk, bring the mixture to a boil, remove from the heat.
Immediately pass the liquid through a sieve into a clean bowl and discard the peel. To the bowl add the sugar and stir until the sugar has dissolved. Let the mixture cool completely then add the vodka and mix together.
Pour the Limoncello into a clean bottle and refrigerate 3-5 days before serving. Shake well before serving.
Notes
To make limoncello, wash the lemons under running water 1, rub the peel with a new sponge to remove any impurities, then dry the lemons with a cloth 2. Peel the lemons with a potato peeler, you will only have to remove the yellow peel and not the white part which would be bitter .Fine or Caster sugar is slightly finer and dissolves more easily than regular granulated sugar. You can substitute it at a 1 for 1 basis or you can make your own fine sugar just by blending granulated sugar until fine.