01 - Line an 8x8-inch square baking pan with parchment paper and lightly oil the surface.
02 - In a small bowl, sprinkle gelatin over 1/2 cup cold water, allowing it to soften and bloom. Set aside.
03 - In a saucepan, combine orange juice, orange zest, granulated sugar, light corn syrup, and 1/4 cup water. Stir gently over medium heat until the sugar fully dissolves.
04 - Increase heat and bring the mixture to a boil. Using a candy thermometer, cook until the temperature reaches 240°F (soft-ball stage), about 10 minutes.
05 - Remove saucepan from heat. Immediately add the bloomed gelatin, stirring thoroughly until the gelatin is completely dissolved and the mixture is smooth.
06 - Pour the hot candy mixture evenly into the prepared pan. Allow it to cool and set at room temperature for 2 to 3 hours, or until firm.
07 - Once set, carefully remove the candy slab from the pan and cut it into small squares or desired shapes using a sharp knife or candy cutter.
08 - Toss each piece in extra granulated sugar to coat all sides and prevent sticking. Store candies in an airtight container, using parchment paper between layers to separate.