what can you use limoncello for
â You can play with the ratios of water to sugar. Start with 1 cup of water and 1 cup of sugar, taste the limoncello, and add additional sugar syrup gradually until you reach a flavor you like â up to 4 cups of water with 4 cups of sugar.More water will dilute the alcohol base, making a less alcoholic, milder, and smoother-sipping liqueur.his will extract more and better lemon flavor from the peels, and makes a smoother, less cloying limoncello. This said, 80 proof vodka is also fine to use â it's also easier to find and less expensive than 100 proof. If you use 80 proof vodka, you won't need to add as much sugar syrup after infusing the vodka.