Limoncello

Zest the lemons, and place zest into a large glass bottle or jar.

Pour in vodka.

Cover loosely and let infuse for one week at room temperature.

After one week, combine sugar and water in a medium saucepan.

Bring to a boil, do not stir.

Boil for 15 minutes.

Allow syrup to cool to room temperature.

Stir vodka mixture into syrup.

Strain into glass bottles, and seal each bottle with a cork.

Let mixture age for 2 weeks at room temperature.

Place bottled liqueur into the freezer.