Tequila Granita with Lychee and Yuzu Cream

Name: Tequila Granita with Lychee and Yuzu Cream
Ingredients: 1 1/2 cups fresh lime juice; 1/2 cup tequila; 1 1/2 cups simple syrup (made from boiling 1 cup sugar and 1 cup water); 2 sheets gelatin, soaked in water; 2 1/2 cups cream; 3 1/2 tablespoons sugar; 1 1/2 tablespoons yuzu juice; 1 grapefruit cut into supremes; 10 fresh lychee, peeled and halved; 8 rose petal ribbons, recipe follows; 2 cups sugar; 3/4 cup water; 1/4 cup glucose; 1/2 cup dried rose buds, with the core of the bud removed