Combine lemon juice and sugar in a medium-size microwave-safe bowl. Stir well and place in microwave on high power for 2 ½ to 3 minutes, or until mixture is boiling and sugar is dissolved. Watch carefully to make sure mixture does not boil up over the top. You can also place ingredients in a medium-size saucepan and bring to a boil. Cook until sugar is dissolved.

Add lemon zest and Limoncello and stir to combine. Cool, then pour into a bottle or jar and store in the refrigerator covered tightly.

Drizzle over fresh fruit, yogurt, ice cream and desserts or stir a spoonful into a cup of tea.