Wash and peel the lemons, avoiding the white pith.

Place the lemon peels in a large glass jar and cover with vodka. Seal and let infuse in a cool dark place for 2 weeks, shaking gently every few days.

After infusion, make simple syrup by boiling equal parts sugar and water (2 cups each) until dissolved. Let cool.

Strain the lemon peels from the vodka, then combine the infused vodka with cooled simple syrup in a jar.

Chill for at least another week before serving over ice.