Grapefruit infused gin is a favorite libation at my house. It only takes two ingredients and you can make it in 15 minutes. Preserve them while the fruit is sweet, flavorful and acidic, as citrus quality wanes over time.
If you've ever been to Italy, especially the Amalfi Coast, you've probably had a glass of this sweet, lemony liqueur at the end of a meal. Not only delicious, it is also very easy to make, especially when lemons are in season during the winter.