Combine lemon peels and vodka in a sterilized sealable bottle.

Store in a cool, dark place for 1 month, shaking every few days.

Combine sugar and water in a medium saucepan on low heat.

Stir until sugar dissolves (3-4 minutes).

Increase heat to medium and bring to a boil.

Cook without stirring for 5-6 minutes, until the syrup thickens.

Strain vodka through a fine sieve and discard lemon peels.

Add vodka to sugar syrup, stirring to combine.

Pour into sterilized airtight bottles and seal.