2 cups crushed graham crackers
1/4 cup sugar
1/2 cup (1 stick) butter, melted
Filling
6 tablespoons fresh key lime juice
1 1/4 ounces (1 envelope) package unflavored gelatin
2 1/2 cups heavy cream, divided
10 (1-ounce) squares white chocolate, chopped
3 (8-ounce) packages cream cheese, softened
1 cup sugar
1 1/2 tablespoons lime zest
1 1/2 ounces white chocolate, grated or shaved into curls, for garnish
Candied Lime Peel, for garnish, recipe follows
4 limes, peels removed and sliced into strips
2 cups sugar, plus more for rolling
2 cups water