Prepare Ingredients: Measure out the orange juice, champagne, sugar, and pectin.
Combine Ingredients: In a medium saucepan, combine the orange juice and champagne. Stir in the sugar and bring the mixture to a boil over medium-high heat.
Add Pectin: Once the sugar has dissolved and the mixture is boiling, sprinkle in the pectin, stirring constantly to prevent clumps.
Boil and Test: Continue boiling for 5-10 minutes, stirring occasionally. Test the jelly by placing a small spoonful on a cold plate. Let it cool, then run your finger through it. If it wrinkles and holds its shape, it's ready.
Jar the Jelly: Once the jelly has reached the desired consistency, remove the pan from the heat. Carefully ladle the hot jelly into sterilized jars, leaving a small gap at the top.