1 cup freshly squeezed grapefruit juice (about 2 grapefruits)
1 cup freshly squeezed orange juice (2 to 3 oranges)
1/4 cup freshly squeezed lemon juice (1 lemon)
2 1/4 cups granulated sugar
1 (4-inch) piece vanilla bean, split
1 cup brandy
1 cup vodka
Thinly peel peel from orange and lemon; chop and set aside.
In a medium saucepan, combine grapefruit, orange and lemon juice, chopped
peel, sugar and vanilla bean. Bring to a boil. Reduce heat; simmer, stirring
frequently for 10 to 12 minutes. Cool to lukewarm.
Pour cooled mixture into aging container; add brandy and vodka.
Allow liqueur to age for 3 weeks, then strain several times using successively
finer strainers, or fine cloth. For maximum clarity, let liqueur stand for several
Pour liqueur into bottles and cap well.
Source: Classic Liqueurs by Cheryl Long and Heather Kibbey