- 3 limes, softened by rolling or microwaving 30 seconds, halved
- 1/3 cups sugar
- 1/2 vanilla bean, scraped
- Water, to cover the limes, plus 2 cups
- 2 cups freshly squeezed lime juice
Preheat oven to 375 degrees F.
Place halved limes, sugar, vanilla bean scrapings, and water in a roasting pan and stir.
Place a strainer over a bowl of a food processor and squeeze the juice from the limes then strain the roasting pan juices into the food processor bowl.
Roughly chop 1 lime half, add it to the food processor, and puree until smooth. Strain the puree into a bowl and stir in the 2 cups water, 2 cups fresh lime juice, and sugar, to taste. Chill and freeze in an ice cream maker according to manufacturers' instructions.