Zest the orange with a microplane grater. Reserve the zest and then extract the juice from the same orange.
Bloom the gelatin (place gelatin powder in cold water) and set aside for about 5 minutes
Bring cranberries, sugar, orange juice, orange zest and water to a boil in a non reactive saucepan. Simmer for 4- 5 minutes, until cranberries start popping and getting soft.
Allow to cool slightly.
Total time required for the recipe doesn't take into account the wait time for the gelatin to set.