Guess where this recipe came from?...straight from Florence.
(makes 1.5 liters or about 6 cups)
10 medium-large lemons
4 cups of high percentage alcohol
1 cup of sugar
4 cups of water
Wash the lemons very well using natural products. Peel the rinds being careful not to cut into the white part of the lemon. Cut the rinds into skinny strips and seal them in a glass container with all of the alcohol for 15 days.
After 15 days, make a simple syrup using the sugar and water. (Melting the sugar into the water over low temperature until all sugar has dissolved.) Turn off and cool to room temperature.
Add the alcohol to the simple syrup mixture by using a filter to avoid adding the lemon peels. Run the limoncello through the filter three times and wring out the lemon peels into the alcohol.
Store the limoncello in a glass bottle and keep in a dry pantry until opened. Prior to drinking, place it in the freezer to chill and store in freezer after it is opened.