Pour the chilled Coca-Cola into a shallow, freezer-safe container, spreading it out evenly to about 1 inch thick.
Place the container in the freezer and let it chill for about 2 hours, until the edges start to firm up while the center remains slightly liquid.
Use a fork or spoon to scrape the icy edges of the frozen Coca-Cola toward the center, breaking up any large blocks and creating a granular, slush-like texture.
Repeat the scraping process every 30 minutes for the next 1-2 hours, until the mixture is evenly textured with small ice crystals and looks fluffy and semi-frozen.
If desired, stir in a tablespoon of lemon juice to enhance brightness and refresh the flavor.
Once the sorbet-like texture is achieved, serve immediately with a spoon or fork, allowing it to melt slightly for the best experience.
