You will need to begin this recipe about two hours before you intend to serve it.
Bring the water to the boil and whisk in the sugar until it has dissolved.
Remove from the heat. Sprinkle the powdered gelatine over the top of the water, then whisk it until the gelatine has dissolved completely.
Cool the liquid for about ten minutes, then stir in the blood orange juice.
Pour into one large 400ml capacity jelly mould or four 1/3 cup capacity ramekins.
Cover the jelly and refrigerate until set, about two hours.
To remove from the mould, dip the base of the mould into hot water briefly. Gently ease the jelly away from the edge of the mould with a butter knife, then tip onto a flat plate. Serve immediately with the rosewater fruits.