Line 2 baking sheets with parchment paper and set aside.

In a large saucepan over medium heat, combine the granulated sugar, water, and corn syrup together, stirring occasionally, until a candy thermometer reads 260 degrees F, about 7-10 minutes.

Just before the corn syrup mixture reaches temperature, whip your egg whites in the bowl of a stand mixer until stiff peaks form, about 3-5 minutes. Sprinkle in the Jell-O powder & salt and beat again until incorporated.

With the mixer running on medium-low, slowly drizzle in the hot corn syrup mixture. This should take you a good minute or two as you want to incorporate it very slowly. Once the hot corn syrup mixture is fully in the mixing bowl, increase the mixing speed to medium-high and continue beating until the candy is no longer glossy and the candy holds its shape, about 6-10 minutes. You can absolutely test one scoop of the candy onto the parchment paper - if it holds up, it's ready.

Grease two spoons with cooking spray and scoop out the candy onto the parchment paper-lined baking sheets. Flick your wrists gently to get the little swoops in the candy. You can make the candy as big or small as you'd like; mine were about 2 Tablespoon-sized. Repeat, working quickly, with remaining candy.

Allow candy to set, at room temperature for 2-3 hours or preferably overnight until firm to the touch. Store remaining candy in an airtight container.